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De novo assembly and characterisation of the transcriptome of the Beringian pseudoscorpion Can. Entomol. (IF 1.177) Pub Date : 2021-02-24 Jacqueline E. Lebenzon; Jantina Toxopeus; Susan E. Anthony; Brent J. Sinclair
Pseudoscorpions are microarthropods that are distributed from the equator to beyond the Arctic circle. Wyochernes asiaticus (Arachnida: Pseudoscorpiones: Chernetidae) is the northernmost species of pseudoscorpion and is broadly distributed in Beringia, an Arctic and sub-Arctic region that remained unglaciated during the last glacial maximum. Wyochernes asiaticus is anoxia tolerant and has moderate
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From branch to bench: establishing wild spruce budworm populations into laboratory colonies for the exploration of local adaptation and plasticity Can. Entomol. (IF 1.177) Pub Date : 2021-02-24 K. Perrault; A.A. Wardlaw; J.N. Candau; C.L. Irwin; M. Demidovich; C.J.K. MacQuarrie; A.D. Roe
Spruce budworm, Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae), is a destructive defoliator found throughout the Nearctic boreal forest. This pest has a broad geographic range and shows regional variation in key life history traits. These population differences may represent important adaptations to local environmental conditions and reflect underlying genetic diversity. Existing laboratory
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Source and spread dynamics of mountain pine beetle in central Alberta, Canada Can. Entomol. (IF 1.177) Pub Date : 2021-02-24 Victor A. Shegelski; Erin O. Campbell; Kirsten M. Thompson; Caroline M. Whitehouse; Felix A.H. Sperling
The mountain pine beetle (Dendroctonus ponderosae Hopkins) (Coleoptera: Curculionidae) is a significant destructive force in the pine forests of western Canada and has the capacity to spread east into a novel host tree species, jack pine (Pinaceae). New populations have been documented in central Alberta, Canada, but the source populations for these outbreaks have yet to be identified. In this study
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Evaluation of compounds for repellency of the multicoloured Asian lady beetle (Coleoptera: Coccinellidae) in vineyards Can. Entomol. (IF 1.177) Pub Date : 2021-02-02 Erik Glemser; Wendy McFadden-Smith; Jean-Philippe Parent
The multicoloured Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), has become a pest in North American vineyards during harvest due to its adverse effects on wine quality. This study evaluated alternative products that may be suitable for use in vineyards as repellents to the beetle. Products were screened as repellent for multicoloured Asian lady beetle in short-term laboratory
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Seasonal emergence patterns of Sitodiplosis mosellana (Diptera: Cecidomyiidae) in the Peace River region, Alberta, Canada Can. Entomol. (IF 1.177) Pub Date : 2021-01-15 Amanda Jorgensen; Maya L. Evenden; Owen Olfert; Jennifer Otani
Wheat midge, Sitodiplosis mosellana Géhin (Diptera: Cecidomyiidae), is an invasive pest of wheat, Triticum spp. (Poaceae), in North America and is found in all wheat-growing regions of the world. Wheat midge biology, particularly post-diapause emergence of adults, varies with geographic region. The biology of wheat midge has not previously been examined in the northernmost area of its range in Canada
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Overwintering behaviour of the skipper fly (Diptera: Piophilidae) of forensic importance in Québec, Canada Can. Entomol. (IF 1.177) Pub Date : 2021-01-11 Julie-Éléonore Maisonhaute; Shari L. Forbes
Laboratory experiments and field observations from August 2019 to April 2020 demonstrated that skipper flies (Diptera: Piophilidae) overwinter as larvae and likely present an obligatory winter diapause in Québec, Canada. Diapause was confirmed by the very few emergences of adults in the laboratory following collection from carrion at the end of summer and in fall, the migration of larvae deep in the
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Annual reproductive phenology of the coprophagous beetle Dichotomius satanas (Coleoptera: Scarabaeidae, Scarabaeinae) of the cloud forest in eastern Mexico Can. Entomol. (IF 1.177) Pub Date : 2021-01-08 Julliana Barretto; Magdalena Cruz; Federico Escobar
Reproductive phenology of organisms is modulated by biotic and abiotic factors, with direct effects on the demography. This study describes the annual reproductive phenology of Dichotomius satanas (Harold, 1867) (Coleoptera: Scarabaeidae, Scarabaeinae) of the cloud forest in eastern Mexico, through the morphological changes in the reproductive systems of individuals and their relationship with climatic
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Disruption of coniferophagous bark beetle (Coleoptera: Curculionidae: Scolytinae) mass attack using angiosperm nonhost volatiles: from concept to operational use Can. Entomol. (IF 1.177) Pub Date : 2020-11-13 Dezene P.W. Huber; Christopher J. Fettig; John H. Borden
Although the use of nonhost plants intercropped among host crops has been a standard agricultural practice for reducing insect herbivory for millennia, the use of nonhost signals to deter forest pests is much more recent, having been developed over the past several decades. Early exploratory studies with synthetic nonhost volatile semiochemicals led to targeted electrophysiological and trapping experiments
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Semiochemicals for management of the southern pine beetle (Coleoptera: Curculionidae: Scolytinae): successes, failures, and obstacles to progress Can. Entomol. (IF 1.177) Pub Date : 2020-12-04 Brian T. Sullivan; Stephen R. Clarke
The southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae: Scolytinae), is among the most destructive bark beetle pests of pines (Pinaceae) of the southeast and mid-Atlantic United States of America, Mexico, and Central America. Numerous volatile compounds can stimulate or reduce attraction of the beetle, but efforts to incorporate these into effective, practical technologies
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3-Methylcyclohex-2-en-1-one and the Douglas-fir beetle (Coleoptera: Curculionidae): history of successful bark beetle pheromone treatments Can. Entomol. (IF 1.177) Pub Date : 2020-11-13 Darrell W. Ross
This paper reviews the literature on the identification of 3-methylcyclohex-2-en-1-one (MCH) as the antiaggregation pheromone of the Douglas-fir beetle (Dendroctonus pseudotsugae Hopkins) (Coleoptera: Curculionidae) and the development of successful management applications using the pheromone. Previously unpublished data from two studies on novel uses of MCH are included. The successful development
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Semiochemicals for bark beetle (Coleoptera: Curculionidae) management in western North America: where do we go from here? Can. Entomol. (IF 1.177) Pub Date : 2020-11-27 Nancy E. Gillette; Christopher J. Fettig
This paper is intended as an assessment of the state of knowledge and development of semiochemical methods for control of bark beetles (Coleoptera: Curculionidae) in western North America and as a roadmap for future research and development in this field. It is based on a keynote presentation given at the symposium Managing Bark and Ambrosia Beetles with Semiochemicals, held in 2018 in Vancouver, British
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Contribution to the knowledge of the endemic Australian genus Binburrum Pollock, 1995 (Coleoptera: Pyrochroidae: Pilipalpinae), with description of three new species Can. Entomol. (IF 1.177) Pub Date : 2020-12-30 Yun Hsiao; Darren A. Pollock
Binburrum Pollock, 1995 is a small group of fire-coloured beetles (Tenebrionoidea: Pyrochroidae: Pilipalpinae) endemic to Australia with five described species. Herein, three new species of Binburrum – B. articuno (southeastern South Australia), B. moltres (northeastern Queensland, Australia), and B. zapdos (northeastern Queensland) – are described based on comparative anatomy, highlighting the underestimated
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Alcedoffula alcyonae Carriker (Phthiraptera: Ischnocera: Philopteridae) infesting belted kingfisher, Megaceryle alcyon (Linnaeus) (Aves: Coraciiformes, Alcedinidae), in Manitoba, Canada Can. Entomol. (IF 1.177) Pub Date : 2020-12-23 Terry D. Galloway
Forty-one belted kingfishers, Megaceryle alcyon (Linnaeus) (Aves: Coraciiformes: Alcedinidae), from Manitoba, Canada were examined for ectoparasites in 1995–2020. One species of chewing louse, Alcedoffula alcyonae Carriker (Phthiraptera: Ischnocera: Philopteridae), infested 48.8% of hosts. The mean intensity of infestation was 17.1, and mean abundance was 8.5 lice per bird. Distribution of infestation
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Douglas-fir beetle (Coleoptera: Curculionidae) response to single-point-source 3-methylcyclohex-2-en-1-one (MCH) releasers Can. Entomol. (IF 1.177) Pub Date : 2020-12-18 Darrell W. Ross; Brian T. Sullivan
The Douglas-fir beetle (Dendroctonus pseudotsugae Hopkins) (Coleoptera: Curculionidae) antiaggregation pheromone, 3-methylcyclohex-2-en-1-one (MCH), has been used since 2000 to protect high-value trees and stands throughout western North America. Operational treatments involve placing individual releasers on a 12 m × 12 m grid throughout the area to be protected. In this study, six widely spaced trap
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First western Canadian records of Nebria brevicollis (Coleoptera: Carabidae) and establishment of populations in Coquitlam, British Columbia, Canada Can. Entomol. (IF 1.177) Pub Date : 2020-12-18 Robert R. McGregor; Henri Goulet; James R. LaBonte
The first western Canadian records of the European carabid, Nebria brevicollis (Fabricius) (Coleoptera: Carabidae), are reported from Vancouver, Coquitlam, and Delta, British Columbia, Canada. A species description is provided to facilitate identification of this new invasive species. In addition, pitfall trap data are presented that demonstrate establishment of populations at four locations in Coquitlam
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New range records and life history observations of insects (Diptera: Dryomyzidae, Chironomidae; Coleoptera: Staphylinidae) associated with barnacles (Balanomorpha: Balanidae, Chthamalidae) on the Pacific coasts of North America and Japan Can. Entomol. (IF 1.177) Pub Date : 2020-12-07 Joel F. Gibson; Henry H.C. Choong
Insects are usually considered to be excluded from the marine environment. A small number of species, however, are considered to be marine, due to spending some portion of their life cycle in salt water. We use natural history collection specimens, in-field observations, and molecular analysis to generate new locale records and natural history data for seven insect species. All seven species are associated
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Distribution of Syrphidae (Diptera) across northern Ontario Can. Entomol. (IF 1.177) Pub Date : 2020-12-04 K.A. Vezsenyi; D.V. Beresford; K. Moran; A.D. Young; M.M. Locke; W.J. Crins; J.A. Schaefer; Jeffrey H. Skevington
Syrphids (Diptera: Syrphidae) are a diverse and widespread family of pollinating flies. Their diverse life history traits not only allow them to thrive in a wide range of habitats but also make them potential bioindicators of environmental change. Here, we report on their distributions from a previously understudied and undeveloped part of northern Ontario that is a large part of the third-largest
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Varroa destructor (Mesostigmata: Varroidae) electrophysiological activity towards common yarrow (Asteraceae) essential oil and its components Can. Entomol. (IF 1.177) Pub Date : 2020-11-26 Michael Light; Nicoletta Faraone; Dave Shutler; G. Christopher Cutler; N. Kirk Hillier
Essential oils produced by plants are a rich source of metabolites that can have toxic or behaviour-modifying effects on arthropods. Some essential oils have shown promise in management of the mite Varroa destructor Anderson and Trueman (Mesostigmata: Varroidae), a parasite of western honey bees, Apis mellifera Linnaeus (Hymenoptera: Apidae). Essential oil and its components from common yarrow, Achillea
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Description of the postembryonic stages of Mulcticola macrocephalus (Kellogg, 1896) (Phthiraptera, Ischnocera: Philopteridae) Can. Entomol. (IF 1.177) Pub Date : 2020-09-30 Kamila M.D. Kuabara; Michel P. Valim; Terry D. Galloway
The nymphs I, II, III, and adult male and adult female stages of Mulcticola macrocephalus (Kellogg) (Phthiraptera, Ischnocera: Philopteridae), a monoxenous species of chewing louse infesting common nighthawk, Chordeiles minor (Forster) (Caprimulgiformes: Caprimulgidae), in North America, are described. Line drawings of whole nymphs and adults are presented, as are details of anterior dorsal head plates
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The first of five moults of Forficula auricularia L. (Dermaptera: Forficulidae) Can. Entomol. (IF 1.177) Pub Date : 2020-10-05 Jean-Claude Tourneur; Claire Cole; Joël Meunier
Most studies about the European earwig Forficula auricularia L. (Dermaptera: Forficulidae) assume that four larval moults occur from hatching to adult. In this note, we use observational and quantitative approaches to reveal the presence of an additional intermediate moult occurring immediately after egg hatching. We then briefly discuss how this finding may open up new possibilities for follow-up
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A first Canadian and three new Québec records of Cicadellidae (Hemiptera) in grapevine (Vitaceae): potentials virus vectors Can. Entomol. (IF 1.177) Pub Date : 2020-10-13 I.E. Ben Moussa; P. Lemoyne; C. Beaulieu; J. Kits; M.L. Fall
A comprehensive biovigilance programme was undertaken in 2018 to monitor potential insect vectors of viruses of grapevines (Vitis vinifera; Vitaceae) in two vineyards in Québec. Two hundred seventy-four insects were collected using yellow sticky traps and sweeping nets. Collected specimens were first classified into orders, with special attention given to the Hemiptera order, which is the main group
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Interior ecosystem in the subarctic: wild, living, arthropod biodiversity in the University of Alaska Museum, Fairbanks, Alaska, United States of America Can. Entomol. (IF 1.177) Pub Date : 2020-10-26 Derek S. Sikes; Kyle Callegari
Outside of pest control reports, little attention has been paid to interior ecosystems in high-latitude regions. Opportunistic sampling of live arthropods captured inside the University of Alaska Museum Fairbanks, Alaska, United States of America allowed us to describe and analyse one such interior ecosystem. We document a minimum of 77 arthropod species over 18 years. Beetles, spiders, and booklice
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How much does the host matter to the parasitoid? Distribution of Eurytoma (Hymenoptera, Chalcidoidea) species amongst two locally co-occurring gall-inducing hosts in the genus Diplolepis (Hymenoptera, Cynipidae) Can. Entomol. (IF 1.177) Pub Date : 2020-09-28 Jamie M. MacEwen; Nathan G. Earley; Robert G. Lalonde
Gall wasps in the cynipid genus Diplolepis Geoffroy (Hymenoptera: Cynipidae) attack various species of native and introduced roses in Canada. Although gall forms are diverse, gall wasps are parasitised by highly concordant complexes of parasitoids and inquilines. Many species of gall wasps attack the same host plants and develop over the same periods in the season, suggesting that opportunistic parasitoids
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Description of the postembryonic stages of Mulcticola macrocephalus (Kellogg, 1896) (Phthiraptera, Ischnocera: Philopteridae)—CORRIGENDUM Can. Entomol. (IF 1.177) Pub Date : 2020-11-20 Kamila M.D. Kuabara; Michel P. Valim; Terry D. Galloway
The nymphs I, II, III, and adult male and adult female stages of Mulcticola macrocephalus (Kellogg) (Phthiraptera, Ischnocera: Philopteridae), a monoxenous species of chewing louse infesting common nighthawk, Chordeiles minor (Forster) (Caprimulgiformes: Caprimulgidae), in North America, are described. Line drawings of whole nymphs and adults are presented, as are details of anterior dorsal head plates
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Cross-contamination is a risk associated with short-term insect specimen storage Can. Entomol. (IF 1.177) Pub Date : 2020-11-20 Jennifer A. Zettler; Brian Kohler; Traci Ness; Heather Buske; Ariel Joy Lipat
Molecular analyses of DNA samples necessitate careful attention to experimental protocols to prevent contamination of samples during the specimen collection and DNA extraction, amplification, and visualisation stages. When these studies involve insects that are collected in the field, standard procedures require samples to be individually sorted and stored in single tubes to prevent cross-contamination
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Host suitability of Trichoplusia ni and Chrysodeixis chalcites (Lepidoptera: Noctuidae) for native and nonnative parasitoids expanding their host range Can. Entomol. (IF 1.177) Pub Date : 2020-10-21 Henry Murillo Pacheco; Sherah Vanlaerhoven; M. Angeles Marcos Garcia
We evaluated the host suitability and related traits of Trichoplusia ni Hübner (Lepidoptera: Noctuidae) and Chrysodeixis chalcites Esper (Lepidoptera: Noctuidae), which is nonnative in North America, for the native parasitoids Campoletis sonorensis Cameron (Hymenoptera: Ichneumonidae) and Copidosoma floridanum Ashmead (Hymenoptera: Encyrtidae), and the nonnative parasitoid Cotesia vanessae Reinhard
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Toxicity of two Engelmann spruce (Pinaceae) monoterpene chemotypes from the southern Rocky Mountains to North American spruce beetle (Coleoptera: Scolytidae) Can. Entomol. (IF 1.177) Pub Date : 2020-09-09 Thomas Seth Davis
Engelmann spruce, Picea engelmannii Parry ex Engelm. (Pinaceae), in the southern Rocky Mountains is composed of two distinct phloem monoterpene chemotypes that differ in relative abundances of multiple monoterpenes, particularly α-pinene and Δ3-carene (hereafter, the “α-pinene chemotype” and the “Δ3-carene chemotype”). Here, relative toxicity of these chemotypes is tested on spruce beetle (Dendroctonus
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An overview of hosts of the New World genus Leschenaultia (Diptera: Tachinidae), with a new record for L. bicolor in Halysidota pearsoni (Lepidoptera: Erebidae) in Brazil Can. Entomol. (IF 1.177) Pub Date : 2020-09-08 Filipe Macedo Gudin; Isabela Maciel Monteiro Carneiro
Specimens of the New World genus Leschenaultia Robineau-Desvoidy (Diptera: Tachinidae) parasitise a wide range of lepidopteran hosts, including economically important pests. The female flies are attracted to volatile compounds released by host plants in response to the herbivory of caterpillars. They deposit microtype eggs on the leaves, which are then ingested by the hosts. We record a new host for
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Development of a single nucleotide polymorphism-based DNA marker for fall armyworm (Lepidoptera: Noctuidae) biotyping: a case study from the fall armyworm outbreak in Sri Lanka Can. Entomol. (IF 1.177) Pub Date : 2020-08-27 Dhanesha Nanayakkara; Dimanthi Jayatilake; Suranga Kodithuwakku
Crop damage caused by fall armyworm (FAW), Spodoptera frugipera J.E. Smith (1797) (Lepidoptera: Noctuidae), has generated concern among agriculturists globally. In 2019, FAW was first reported in Sri Lanka, where it caused significant losses to corn crops. However, given that the two FAW biotypes – “rice strain” (R-FAW) and “corn strain” (C-FAW) – are morphologically identical, the biotype(s) present
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Effect of nest microclimate temperatures on metabolic rates of small carpenter bees, Ceratina calcarata (Hymenoptera: Apidae) Can. Entomol. (IF 1.177) Pub Date : 2020-08-26 Miriam H. Richards; Andrea Cardama Garate; Mary Shehata; Derrick Groom; Glenn J. Tattersall; Kenneth C. Welch
Small carpenter bees (Ceratina calcarata Robertson) (Hymenoptera: Apidae) build their nests in both sunny and shady sites, so maternal decisions about nest sites influence the thermal environment experienced by juveniles throughout development. A previous study demonstrated that when larvae and pupae were raised in the laboratory at room temperature, those from sunny nests developed more slowly than
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Semiochemical-mediated host selection by Xylosandrus spp. ambrosia beetles (Coleoptera: Curculionidae) attacking horticultural tree crops: a review of basic and applied science Can. Entomol. (IF 1.177) Pub Date : 2020-08-24 Christopher M. Ranger; Michael E. Reding; Karla Addesso; Matthew Ginzel; Davide Rassati
Exotic ambrosia beetles (Curculionidae: Scolytinae) in the tribe Xyleborini include destructive pests of trees growing in horticultural cropping systems. Three species are especially problematic: Xylosandrus compactus (Eichhoff), Xylosandrus crassiusculus (Motschulsky), and Xylosandrus germanus (Blandford). Due to similarities in their host tree interactions, this mini-review focuses on these three
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Semiochemical-based integrated pest management of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) in British Columbia’s forest industry: implemented in 1982 and still running Can. Entomol. (IF 1.177) Pub Date : 2020-08-20 John H. Borden; Eveline Stokkink
Three species of ambrosia beetles (Trypodendron lineatum (Olivier), Gnathotrichus sulcatus (LeConte), and G. retusus (LeConte) (Coleoptera: Curculionidae: Scolytinae)) have been estimated to cause annual losses of $95–$189 million in degrade of logs and lumber on the British Columbia coast, in Canada. A consultant-run semiochemical-based integrated pest management programme was implemented in 1982
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Sand and shine: an inexpensive method to measure terrestrial arthropod movement in the laboratory Can. Entomol. (IF 1.177) Pub Date : 2020-08-19 Alexandre M.M.C. Loureiro; Vilis O. Nams
Understanding what drives insect movement is crucial to understanding how they might be affected by environmental or human disturbances. Methods that measure movement can be expensive, and few are available that do not rely on some sort of video footage. We developed a relatively inexpensive method that allows the user to see the full path of the individual insects within an arena after a certain amount
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Monitoring of Drosophila suzukii (Diptera: Drosophilidae) in Okanagan Valley vineyards, British Columbia, Canada, and assessment of damage to table and wine grapes (Vitaceae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-22 Susanna Acheampong; Etienne Lord; D. Thomas Lowery
Spotted-wing drosophila, Drosophila suzukii, (Matsumura) (Diptera: Drosophilidae), has become a serious pest of soft fruit in the Okanagan Valley of British Columbia, Canada since its detection in 2009. The study was conducted to determine the distribution of D. suzukii and damage levels in grapes. Apple cider vinegar-baited traps placed in table and wine grape (Vitis vinifera Linnaeus; Vitaceae) vineyards
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Phenology and spatial distribution of spotted-wing drosophila (Diptera: Drosophilidae) in lowbush blueberry (Ericaceae) in Saguenay-Lac-Saint-Jean, Québec, Canada Can. Entomol. (IF 1.177) Pub Date : 2020-05-26 William Champagne-Cauchon; Jean-Frédéric Guay; Valérie Fournier; Conrad Cloutier
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), the spotted-wing drosophila, is an invasive pest of fruit crops, which appeared in eastern Canada in 2010. It represents a major threat to lowbush blueberry (Vaccinium angustifolium Aiton; Ericaceae) in the Saguenay-Lac-Saint-Jean region, Québec, Canada, at the northern limits of its distribution. The dynamics, overwintering capacity, population
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Spatial distribution of spotted-wing drosophila (Diptera: Drosophilidae) and other insects in fruit of a sweet cherry (Rosaceae) orchard Can. Entomol. (IF 1.177) Pub Date : 2020-06-22 Amanda C. Chamberlain; Robert Lalonde; Howard M.A. Thistlewood
Spotted-wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), is an invasive pest of many small and soft fruits. We present the first results concerning its oviposition in the canopy of a sweet cherry (Prunus avium Linnaeus; Rosaceae) orchard. We examined the distribution of arthropods emerging from fruits of five cultivars ripening successively over seven weeks, in interior and
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Nutritional developmental history and its consequences for reproductive success in Drosophila suzukii (Diptera: Drosophilidae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-05 Yvonne Young; Tristan A.F. Long
The characteristics of the juvenile developmental environment of an individual can have many important consequences for their adult reproductive success as it may shape the development and expression of phenotypes that are relevant to the later operation of sexual selection. Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is an economically important invasive pest species that lays its eggs
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Persistence of diet effects on the microbiota of Drosophila suzukii (Diptera: Drosophilidae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-22 Yanira Jiménez-Padilla; Ebenezer O. Esan; Kevin D. Floate; Brent J. Sinclair
The insect commensal microbiota consists of prokaryotes and eukaryotes. We explored the effect of diet and the persistence of the gut microbiota across generations in Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). We transferred subsets of a single population of D. suzukii to different fruit-based diets (blueberry (Vaccinium Linnaeus; Ericaceae), raspberry (Rubus Linnaeus; Rosaceae), and
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Comparing apples and oranges (and blueberries and grapes): fruit type affects development and cold susceptibility of immature Drosophila suzukii (Diptera: Drosophilidae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-22 Yanira Jiménez-Padilla; Laura V. Ferguson; Brent J. Sinclair
Drosophila suzukii Matsumura (Diptera: Drosophilidae) is a cosmopolitan polyphagous pest on unripe soft-skinned fruits. We sought to determine (1) temperature treatments that could be used to kill immature D. suzukii in fruit or packaging and (2) whether development on different fruits led to differences in cold tolerance of immature D. suzukii. We reared animals from egg on a banana-based laboratory
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Effect of irradiation on the mating capacity and competitiveness of Drosophila suzukii (Diptera: Drosophilidae) for the development of the sterile insect technique Can. Entomol. (IF 1.177) Pub Date : 2020-06-22 Geneviève Lanouette; Jacques Brodeur; François Fournier; Veronique Martel; Annabelle Firlej
The sterile insect technique is a new approach for the integrated management of Drosophila suzukii Matsumura (Diptera: Drosophilidae), an invasive pest in North America. We evaluated, under laboratory conditions, the mating capacities and success of male D. suzukii, irradiated at a dose of 120 Gy, with and without competition. We also explored the tendency of females to remate depending if their first
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Effects of interplanting peppermint (Lamiaceae) in strawberry (Rosaceae) on Drosophila suzukii (Diptera: Drosophilidae) and seed-feeding pests (Hemiptera: Lygaeidae, Miridae, Rhyparochromidae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-05 Justin M. Renkema; Andrew Frewin; Rebecca H. Hallett
Spotted-wing drosophila (Drosophila suzukii (Matsumura) (Diptera: Drosophilidae)) is a pest of tender fruit and berry crops because female flies oviposit in ripening fruit. Frequent insecticide applications are needed for control during fruit ripening, with few noninsecticide options available. The effect of interplanting peppermint (Mentha × piperita Linnaeus (Lamiaceae)) in strawberry (Fragaria ×
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Distribution of alfalfa weevil (Coleoptera: Curculionidae) and its parasitoids on the Canadian Prairies, with a key to described species of Nearctic Bathyplectes (Hymenoptera: Ichneumonidae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-24 Juliana Soroka; Andrew M.R. Bennett; Cezarina Kora; Marla D. Schwarzfeld
This study recorded distribution and size of alfalfa weevil (Hypera postica (Gyllenhal); Coleoptera: Curculionidae) populations in Saskatchewan, Canada, from 2001 to 2014. The spread of alfalfa weevil across the province, originally southwest to southeast, was northward and westward during this time. By 2014, only northwestern and west central areas remained relatively alfalfa weevil free. From a minor
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Effect of protein extracts of Amaranthus retroflexus (Amaranthaceae) and Cuminum cyminum (Apiaceae) on digestive proteinases and biological characters of Helicoverpa (Heliothis) armigera (Hübner) (Lepidoptera: Noctuidae) Can. Entomol. (IF 1.177) Pub Date : 2020-06-05 Solmaz Azimi; Shima Rahmani; Maghsoud Pazhouhandeh
Plant proteinase inhibitors are among the promising biopesticides which are induced in plants tissues against the several Lepidoptera pests to inhibit digestive proteases. In this study, protein extracts of two nonhost plant seeds, Amaranthus retroflexus Linnaeus (Amaranthaceae) and Cuminum cyminum Linnaeus (Apiaceae), were examined on Helicoverpaarmigera (Hübner) (Lepidoptera: Noctuidae). The results
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Review of the parasitoid genus Synosis Townes, 1959 (Hymenoptera: Ichneumonidae: Metopiinae) in the Neotropical region, with a key to species Can. Entomol. (IF 1.177) Pub Date : 2020-05-29 M. Alvarado
The genus Synosis Townes, 1959 (Hymenoptera: Ichneumonidae: Metopiinae) currently comprises 18 described species. A redescription of the genus is presented and three new species are described and illustrated: S. diaguita new species, S. nigra new species, and S. zezei new species. Two previously known species, Synosis rubinus Alvarado and Rodriguez-Berrios, 2013 and S. townesi Alvarado and Rodriguez-Berrios
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Diversity and nutritional value of pollen harvested by honey bee (Hymenoptera: Apidae) colonies during lowbush blueberry and cranberry (Ericaceae) pollination Can. Entomol. (IF 1.177) Pub Date : 2020-05-26 Claude Dufour; Valérie Fournier; Pierre Giovenazzo
The growth of the commercial pollination industry raises important concerns regarding honey bee (Apis mellifera Linnaeus; Hymenoptera: Apidae) health and development. While providing such services, honey bees are often exposed to undiversified pollen sources that may contribute to nutritional deficiencies, notably in protein and amino acids. To understand how honey bees are affected during provision
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Natural variation in the growth and development of Protopiophila litigata (Diptera: Piophilidae) developing in three moose (Artiodactyla: Cervidae) antlers–CORRIGENDUM Can. Entomol. (IF 1.177) Pub Date : 2020-05-21 Christopher S. Angell; Olivia Cook
In animals, the early-life environment influences growth and development, which can have lasting effects on life history and fitness into adulthood. We investigated the patterns of growth, pupal development time, and their covariation in Protopiophila litigata Bonduriansky (Diptera: Piophilidae) larvae of both sexes collected from three discarded moose (Alces alces (Linnaeus) (Artiodactyla: Cervidae))
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Oecanthus nigricornis (Orthoptera: Gryllidae) as the first known host of Stylogaster neglecta (Diptera: Conopidae) Can. Entomol. (IF 1.177) Pub Date : 2020-05-21 Erik A. Etzler; William D. Brown; Luc F. Bussière; Darryl T. Gwynne
The conopid fly Stylogaster neglecta Williston (Diptera: Conopidae) is a parasitoid with no known host. We report this species as the first recorded dipteran parasitoid of Oecanthus nigricornis Walker (Orthoptera: Gryllidae) (black-horned tree crickets). We reared field-collected O. nigricornis juveniles over several months in 2017 and found that larval S. neglecta emerged from them during late July
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Determining diets for fishes (Actinopterygii) from a small interior British Columbia, Canada stream: a comparison of morphological and molecular approaches Can. Entomol. (IF 1.177) Pub Date : 2020-05-19 Adam D.C. O’Dell; Anne-Marie Flores; Marla D. Schwarzfeld; Daniel J. Erasmus; Daniel D. Heath; Dezene P.W. Huber; J. Mark Shrimpton
Analysis of food webs is important for defining functional components of ecosystems, but dietary data are often difficult to obtain and coarsely characterised. We compared three methods of rainbow trout (Oncorhynchus mykiss (Walbaum); Salmoniformes: Salmonidae) and prickly sculpin (Cottus asper Richardson; Scorpaeniformes: Cottidae) gut content analysis: traditional morphological taxonomy of prey items
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Dissection of Anoplophora glabripennis (Coleoptera: Cerambycidae) larval tissues for physiological and molecular studies Can. Entomol. (IF 1.177) Pub Date : 2020-05-04 Alex S. Torson; Lauren E. Des Marteaux; Susan Bowman; Meng Lei Zhang; Kevin Ong; Daniel Doucet; Brent J. Sinclair; Amanda D. Roe
Many biological processes are partitioned among organs and tissues, necessitating tissue-specific or organ-specific analysis (particularly for comparative -omics studies). Standardised techniques for tissue identification and dissection are therefore imperative for comparing among studies. Here we describe dissection protocols for isolating six key tissues/organs from larvae of the Asian longhorned
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Semiochemical tracks of predaceous Coccinellidae (Coleoptera) modulate feeding attributes and assimilation of nutrients in Zygogramma bicolorata (Coleoptera: Chrysomelidae) Can. Entomol. (IF 1.177) Pub Date : 2020-04-27 Priya Patel; Bhupendra Kumar; Rekha Upadhyay; Daya Ram Bhusal; Dinesh Kumar
Parthenium hysterophorus Linnaeus (Asteraceae) is a toxic weed found abundantly in major agroecosystems of the world. The weed is inhabited by both phytophagous Chrysomelidae (Coleoptera), used as biocontrol agents, and the predaceous Coccinellidae (Coleoptera). The present investigation was designed to assess the feeding attributes and larval development of Zygogramma bicolorata Pallister (Coleoptera:
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Diptera communities of raptor (Aves) nests in Nova Scotia, Canada Can. Entomol. (IF 1.177) Pub Date : 2020-04-27 Valerie Levesque-Beaudin; Bradley J. Sinclair; Stephen A. Marshall; Randolph F. Lauff
The identity, richness, and abundance of true flies (Diptera) from the nests of three cavity-nesting raptors (Aves) were investigated in northern Nova Scotia, Canada. After fledging, flies were extracted from the nest material using Berlese funnels within an emergence chamber. Thirty-one species/morphospecies from 14 families were collected, including eight new records for Nova Scotia and two new records
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Managing bark and ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) with semiochemicals Can. Entomol. (IF 1.177) Pub Date : 2020-04-24 Steven J. Seybold; Christopher J. Fettig
On 14 November 2018, a symposium Managing bark and ambrosia beetles with semiochemicals was held in Vancouver, British Columbia, Canada, at the Joint Meeting of the Entomological Society of America, the Entomological Society of Canada, and the Entomological Society of British Columbia. The focus was on the application of behavioural chemicals for management of bark and ambrosia beetles (Coleoptera:
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Description of two new species of Prosapia (Hemiptera: Cercopidae) from the Nearctic and Neotropics, with a key to species of the P. inferens species group Can. Entomol. (IF 1.177) Pub Date : 2020-04-22 Ulises Castro-Valderrama; Daniel C. Peck; Gervasio S. Carvalho; Jorge Manuel Valdez-Carrasco; Jesús Romero Nápoles
Insects in the subfamily Ischnorhininae (Hemiptera: Auchenorrhyncha: Cercopidae), known as spittlebugs or froghoppers, are mainly distributed in the Neotropical region. A few genera include pest species of economic relevance, including Prosapia Fennah, 1949. Two new species from Mexico and Costa Rica are now described for this genus, and a key to species is proposed for the P. inferens (Walker, 1858)
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Modelling the tri-trophic population dynamics of a host crop (Triticum aestivum; Poaceae), a major pest insect (Sitodiplosis mosellana; Diptera: Cecidomyiidae), and a parasitoid of the pest species (Macroglenes penetrans; Hymenoptera: Pteromalidae): a cohort-based approach incorporating the effects of weather Can. Entomol. (IF 1.177) Pub Date : 2020-04-13 O. Olfert; R.M. Weiss; M. Vankosky; S. Hartley; J.F. Doane
This paper describes a tri-trophic analysis of the ecological dynamics of a crop, an insect pest, and a natural enemy of the insect pest. Worldwide wheat (Triticum Linnaeus) (Poaceae) production in 2018–2019 was estimated at over 700 million metric tons in 2018–2019. Wheat midge, Sitodiplosis mosellana (Géhin) (Diptera: Cecidomyiidae), a serious insect pest of wheat, is widely distributed in many parts
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Degree-day models to predict carrot weevil (Coleoptera: Curculionidae) emergence and oviposition in Nova Scotia, Canada Can. Entomol. (IF 1.177) Pub Date : 2020-04-09 Suzanne Blatt; Deney Augustine Joseph; G. Christopher Cutler; A. Randall Olson; Scott White
Carrot weevil, Listronotus oregonensis (LeConte) (Coleoptera: Curculionidae), is a pest of carrot (Daucus carota var. sativus Hoffmann; Apiaceae) throughout eastern Canada. Carrot weevil emergence and oviposition were monitored in commercial carrot fields in Nova Scotia. Cumulative degree days were calculated using a base temperature of 7 °C (DD7), and models were developed to predict cumulative emergence
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Parasitism and phenology of Dasineura mali (Diptera: Cecidomyiidae) in Canadian apple (Rosaceae) orchards Can. Entomol. (IF 1.177) Pub Date : 2020-04-07 J.E. Cossentine; A.M. Brauner; J.L. Franklin; M.C. Robertson; P.N. Buhl; S. Blatt; T.D. Gariepy; H. Fraser; M. Appleby; K. Grigg-McGuffin; P.G. Mason
The apple leaf midge, Dasineura mali (Kieffer) (Diptera: Cecidomyiidae), an invasive alien pest established for many years in Nova Scotia, Canada, has invaded Ontario and British Columbia, Canada apple (Malus domestica Borkhausen; Rosaceae) orchards, damaging growing tips of trees. Molecular analysis indicated that Nova Scotia populations are genetically different from Ontario and British Columbia
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Management of bark and ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) with semiochemicals: letter to a prospective graduate student Can. Entomol. (IF 1.177) Pub Date : 2020-04-03 John H. Borden
When I accepted the invitation to serve as the lead-off speaker for the symposium Managing Bark and Ambrosia Beetles with Semiochemicals on which this special issue is based, I noted that everything one needed to know was published in Seybold et al. (2018), a really good review of the subject. So, I took another course. About 25 years ago, I gave an oral presentation in the form of a letter to an imaginary
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Operational sex ratio and paternal age sway mating and reproductive performance in Menochilus sexmaculatus (Coleoptera: Coccinellidae) Can. Entomol. (IF 1.177) Pub Date : 2020-03-20 Swati Saxena; Geetanjali Mishra; Omkar
Operational sex ratio and paternal age are known to independently affect mating behaviour and reproductive performance. We conducted experiments to assess the effects of operational sex ratio and paternal age on mating, reproduction, and total development duration of Menochilus sexmaculatus (Fabricius) (Coleoptera: Coccinellidae). Three male-biased sex ratios, no (1:1), modest (1:2), and extreme (1:5)
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A new genus and species of split-footed lacewings (Neuroptera) from the early Eocene of western Canada and revision of the subfamily affinities of Mesozoic Nymphidae Can. Entomol. (IF 1.177) Pub Date : 2020-03-19 S. Bruce Archibald; Vladimir N. Makarkin
A new genus and new species of Nymphidae (Neuroptera) is described from the Ypresian Okanagan Highlands locality of Falkland, British Columbia, Canada: Epinesydrion falklandensisnew genus, new species. This is only the fourth known Cenozoic adult specimen, and all others are less complete. It is the second specimen from the Okanagan Highlands. Currently Nymphidae has two recognised subfamilies. All
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Evaluating methods to detect and monitor North American larval parasitoids of the emerald ash borer (Coleoptera: Buprestidae) Can. Entomol. (IF 1.177) Pub Date : 2020-03-18 Justin M. Gaudon; D. Barry Lyons; Gene C. Jones; Jeremy D. Allison; Sandy M. Smith
Populations of native North American parasitoids attacking Agrilus Curtis (Coleoptera: Buprestidae) species have recently been considered as part of an augmentative biological control programme in an attempt to manage emerald ash borer, Agrilus planipennis Fairmaire, a destructive wood-boring beetle discovered in North America in 2002. We evaluate trapping methods to detect and monitor populations
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