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A new species of Cerapus (Amphipoda, Senticaudata, Ischyroceridae) from Mae Klong Estuary, with a discussion on their nesting and types of mating behaviour Zoosyst. Evol. (IF 2.0) Pub Date : 2023-12-04 Chanikan Katnoum, Tosaphol Saetung Keetapithchayakul, Azman Abdul Rahim, Koraon Wongkamhaeng
The first representative of the genus Cerapus in the Gulf of Thailand, Cerapus rivulus sp. nov., is described from specimens sampled from Mae Klong Estuary, the inner Gulf of Thailand. The main identifying characteristics of this new amphipod species are pereonites 1 and 2 without constriction; male gnathopod propodus palm transverse with long posterior defining tooth and well-developed anterodistal
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A new freshwater species of Gnorimosphaeroma (Crustacea, Isopoda, Sphaeromatidae) from Chichi-jima Island, Ogasawara Islands, Japan Zoosyst. Evol. (IF 2.0) Pub Date : 2023-11-21 Ko Tomikawa, Junpei Yoshii, Akari Noda, Chi-Woo Lee, Tetsuro Sasaki, Naoya Kimura, Noboru Nunomura
This study describes Gnorimosphaeroma rivularesp. nov. from a stream on Chichi-jima Island, Ogasawara Islands, Japan. This is the second freshwater species of Gnorimosphaeroma and the third Sphaeromatidae from oceanic islands. Gnorimosphaeroma rivularesp. nov. is morphologically similar to G. boninense Nunomura, 2006, G. naktongense Kwon & Kim, 1987 and G. saijoense Nunomura, 2013. However, G. rivularesp
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The Caucasus is neither a cradle nor a museum of diversity of the land snail genus Helix (Gastropoda, Stylommatophora, Helicidae), while Crimea is home to an ancient lineage Zoosyst. Evol. (IF 2.0) Pub Date : 2023-11-15 Ondřej Korábek, Igor Balashov, Marco T. Neiber, Frank Walther, Bernhard Hausdorf
The Caucasus and the adjacent Pontic Mountains in north-eastern Anatolia are home to numerous endemic land snail genera and species. The diversity of the region is the result of both intra-regional speciation and the persistence of relict lineages. The same seemed to be true for the genus Helix, which has been present in the Greater Caucasus since the Miocene. In the Caucasus region, there are three
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A new species of free-living marine nematode, Fotolaimus cavus sp. nov. (Nematoda, Oncholaimida, Oncholaimidae), isolated from a submarine anchialine cave in the Ryukyu Islands, southwestern Japan Zoosyst. Evol. (IF 2.0) Pub Date : 2023-11-06 Daisuke Shimada, Keiichi Kakui, Yoshihisa Fujita
Fotolaimus cavussp. nov. was described from a submarine anchialine cave called Akuma-no-yakata on the Shimoji Island, Miyako Island Group, Ryukyu Islands, southwestern Japan. This is the first free-living marine nematode isolated from a submarine cave in Japan, and the third species of the genus Fotolaimus. This new species differs from its congeners by its small body size, wide amphids, long buccal
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Mammalian type material from Cameroon in the Museum für Naturkunde Berlin Zoosyst. Evol. (IF 2.0) Pub Date : 2023-10-19 Paul Taku Bisong, Jason Dunlop, Catarina Madruga
Historical data, combined with current data on species distribution, are a valuable resource for tracking changes in biodiversity and can potentially be applied to developing models in conservation biology and designing and assessing conservation strategies. Historical data supporting current knowledge on the natural history of the African continent are primarily held in Western museums. The Zoologisches
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Identification of the rare deep-dwelling goby Suruga fundicola Jordan & Snyder, 1901 (Gobiiformes, Gobiidae) from the Yellow Sea Zoosyst. Evol. (IF 2.0) Pub Date : 2023-10-05 Changting An, Ang Li, Huan Wang, Busu Li, Kaiying Liu, Hongyue Sun, Shufang Liu, Zhimeng Zhuang, Richard van der Laan
During the 2022 R/V cruises in the Yellow Sea, four goby specimens (51.2‒63.5 mm) were captured by using an Agassiz trawl at a water depth of about 70 meters. These specimens were identified as Suruga fundicola, mainly by the morphometric characters. Their identification was further confirmed by a molecular phylogenetic analysis based on 12S and COI mtDNA genes. Considering that the four specimens
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A new freshwater amphipod (Amphipoda, Gammaridae) from the Fakıllı Cave, Düzce Türkiye: Gammarus kunti sp. nov. Zoosyst. Evol. (IF 2.0) Pub Date : 2023-10-04 Murat Özbek, Hazel Baytaşoğlu, İsmail Aksu
Aquatic species (such as fish, amphipods, isopods, hirudineans etc.) adapted to environmental conditions can live in caves connected to groundwater. The species of Niphargus and Gammarus are the most commonly encountered amphipods in caves. Türkiye is very rich in terms of karst areas and is home to more than 2000 known caves. Fakıllı Cave, located in Düzce Province in the Western Anatolian Region
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Revision of the genus Oxyarcturus (Isopoda, Valvifera, Antarcturidae), with a description of a new deep-sea species from Argentina Zoosyst. Evol. (IF 2.0) Pub Date : 2023-10-04 Emanuel Pereira, Daniel Roccatagliata, Brenda L. Doti
A new antarcturid isopod, Oxyarcturus holoacanthussp. nov., is fully described based on seven specimens collected in the Mar del Plata submarine canyon at 2950 m depth, during the “Talud Continental III” expedition on board the Argentinian RV “Puerto Deseado”. Oxyarcturus holoacanthussp. nov. is closely related to O. spinosus (Beddard, 1886), from which it can be distinguished by the body spine pattern
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Two new Oxynoemacheilus species in western Anatolia (Teleostei, Nemacheilidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-10-04 Davut Turan, Sadi Aksu, Gökhan Kalayci
Oxynoemacheilus sakaryaensissp. nov., is restricted to the Sakarya River basin, and O. melenicussp. nov., is distributed in both the Sakarya River and Büyükmelen Stream. Oxynoemacheilus sakaryaensis is distinguished by having a flank plain or with numerous irregularly shaped pale brownish bars and a caudal-peduncle depth 2.8–3.2 times in its length. Oxynoemacheilus melenicus is distinguished by having
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Stenotanais (Crustacea, Tanaidacea) from the Santos Basin: the first described species of the family Akanthophoreidae off the Brazilian coast Zoosyst. Evol. (IF 2.0) Pub Date : 2023-10-04 Juliana Lopes Segadilha, Graham Bird, Marcos Tavares
Benthic samples collected from depths ranging between 686 and 2410 m along the Brazilian continental upper slope from Rio de Janeiro State to Santa Catarina State (23°S to 27°S) yielded a wealth of tanaidacean material, including two new species of Stenotanais. This is the first described species of the family Akanthophoreidae from Brazilian waters. Stenotanais leonardoisp. nov. has a combination of
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Diversity of the genus Tropodiaptomus Kiefer, 1932 (Crustacea, Copepoda, Calanoida, Diaptomidae) in Thailand, with the description of two new species Zoosyst. Evol. (IF 2.0) Pub Date : 2023-07-05 Thanida Saetang, Supiyanit Maiphae
Tropodiaptomus is a genus of diaptomid copepods with 10 species currently recorded in Thailand. A recent study on DNA taxonomy revealed putative new species among specimens collected from freshwater habitats throughout Thailand. This study examined the morphological characteristics and confirmed the taxonomic status of the two putative new species of Tropodiaptomus. Results showed that the two new
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First report of a histozoic Henneguya (Cnidaria, Endocnidozoa) infecting a synbranchid potamodromous fish from South America: Morphostructural and biological data Zoosyst. Evol. (IF 2.0) Pub Date : 2023-07-05 Patrick D. Mathews, Omar Mertins, Luis L. Espinoza, Julio C. Aguiar, Tiago Milanin
In this study, a Henneguya myxosporean species is described to infect an ecological, biological, and evolutionary important fish from Amazon biome. The myxosporean was found in the skin of only one specimen of marbled swamp eel, Synbranchus marmoratus caught in a small stream from Peruvian Amazon floodplain. Mature myxospores have ovoid shape from the valvular view, measuring 32.2 ± 0.6 μm (31.6–32
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Illustrated catalogue of sphaeromatoid isopods (Crustacea, Malacostraca) in the Canadian Museum of Nature (CMN) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-07-05 Valiallah Khalaji-Pirbalouty, Jean-Marc Gagnon
Zoological collections are major treasures representing the history of animal biodiversity on Earth and are an important resource for biodiversity and conservation research. The Canadian Museum of Nature (CMN) has one of the oldest crustacean collections in North America. Here, we provide an illustrated catalogue of the superfamily Sphaeromatoidea Latreille, 1825, deposited in the Canadian Museum of
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A new species of slender flatworm in the genus Eucestoplana and a record of E. cf. cuneata (Platyhelminthes, Polycladida) from the Okinawa Islands, Japan, with an inference of their phylogenetic positions within Cestoplanidae Zoosyst. Evol. (IF 2.0) Pub Date : 2023-07-05 Aoi Tsuyuki, Yuki Oya, Hiroshi Kajihara
In this study, we describe a new species of elongated marine flatworm, Eucestoplana ittanmomensp. nov., collected from the intertidal zone of the Okinawa Islands, Japan. Eucestoplana ittanmomensp. nov. is distinguished from other congeners based on the following characteristics: i) its translucent body lacking coloration, ii) its dome-shaped penis sheath, iii) the absence of cilia on the inner wall
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Diversity of Sand Snakes (Psammophiidae, Psammophis) in the Horn of Africa, with the description of a new species from Somalia Zoosyst. Evol. (IF 2.0) Pub Date : 2023-06-27 Jiří Šmíd, Sergio Matilla Fernández, Hassan Sh Abdirahman Elmi, Tomáš Mazuch
The biological diversity of the Horn of Africa is one of the least studied in the world. Yet the Horn supports rich communities of species that are mostly endemic to the region. Here we study the diversity of Sand Snakes (Psammophis) in East Africa, their phylogeny and systematics. Previous studies have unveiled several cryptic and potentially undescribed species of Psammophis that occur in the Horn
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A survey of Dysderella Dunin, 1992 (Araneae, Dysderidae), with a new species from Iran Zoosyst. Evol. (IF 2.0) Pub Date : 2023-06-07 Alireza Zamani, Yuri M. Marusik, Tamás Szűts
The dysderid spider genus Dysderella Dunin, 1992 is surveyed. The genus currently comprises two species: D. caspica (Dunin, 1990) from Azerbaijan and North Caucasus and D. transcaspica (Dunin & Fet, 1985) from Turkmenistan and north-eastern Iran. Herein, D. elburzicasp. nov. is described based on male specimens collected in Tehran Province, northern Iran. All three species are illustrated and their
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A review of the genus Sernokorba Kamura, 1992 (Araneae, Gnaphosidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-06-02 Nikolett Gallé-Szpisjak, Róbert Gallé, Tamás Szűts
The gnaphosid spider genus Sernokorba Kamura, 1992 is reviewed. While Sernokorba pallidipatellis (Bösenberg and Strand 1906) and Sernokorba fanjing Song, Zhu & Zhang, 2004, occur in the Far East and the Japanese archipelago, Sernokorba tescorum (Simon, 1914) is known from Europe. We here describe a fourth species, Sernokorba betyarsp. nov. (male and female) from the forest steppe vegetation in southern
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Kangaraneus, a new genus of orb-weaving spider from Australia (Araneae, Araneidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-05-31 Pedro de S. Castanheira, Volker W. Framenau
A new Australian genus in the orb-weaving spider family Araneidae Clerck, 1757 is described, Kangaraneusgen. nov., with K. arenaceus (Keyserling, 1886) comb. nov. (New South Wales, Queensland, South Australia, Victoria and Western Australia) as the type species and also including two other species: Kangaraneus amblycyphus (Simon, 1908) comb. nov. (Australian Capital Territory, New South Wales, Queensland
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A new species of Anatextrix Kaya, Zamani, Yağmur & Marusik, 2023 (Araneae, Agelenidae, Textricini) from southern Türkiye, with a remarkable morphology of the male palpal femur Zoosyst. Evol. (IF 2.0) Pub Date : 2023-05-25 Rahşen S. Kaya, Alireza Zamani, Ersen Aydın Yağmur, Yuri M. Marusik
Anatextrix monstrabilissp. nov. (Araneae: Agelenidae) is described and illustrated, based on male and female specimens collected from Adana Province, Türkiye. The new species has an L-shaped male palpal femur bearing multiple apophyses, which is a rare trait in spiders. Anatextrix monstrabilissp. nov. is the second species of the recently described genus Anatextrix Kaya, Zamani, Yağmur & Marusik, 2023
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A new genus of river snails, Dalipaludina (Gastropoda, Viviparidae), endemic to the Yunnan Plateau of SW China Zoosyst. Evol. (IF 2.0) Pub Date : 2023-05-11 Le-Jia Zhang, Li-Na Du, Thomas von Rintelen
A new genus of viviparid snail, Dalipaludinagen. nov., from the Yunnan Plateau of China is described within an integrative taxonomic framework based on data from the mitochondrial COI marker and morphology. Dalipaludina can be distinguished from all other viviparid genera by a unique combination shell, operculum and radula characters. Four species are assigned here to the new genus, Dalipaludina delavayanacomb
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Taxonomic notes on the head squamation of the genus Liotyphlops Peters, 1881 (Serpentes, Anomalepididae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-05-02 Fidélis Júnio Marra Santos
The only head scales which are consistent for Liotyphlops taxonomy are the rostral, prefrontal, and frontal scales. Subdivisions and nomenclature of scales posterior to the prefrontal, frontal, nasal and above supralabials two, three and four should be avoided.
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First record of the false violin spider of the family Drymusidae (Araneae, Synspermiata, Scytodoidea) from Venezuela, with the description of a new species Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-29 Osvaldo Villarreal, David Chamé-Vázquez
Drymusa huberisp. nov. is described and illustrated, based on both sexes with specimens collected in a tropical dry forest in Yaracuy State, Venezuela. This new species constitutes the first record of the family Drymusidae for this Neotropical country and fills the distribution gap of the family in the north of South America. Furthermore, we provide the first identification key for all species of Drymusa
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A new deep-sea species of Elliptiolucina Cosel & Bouchet, 2008 (Bivalvia, Lucinida, Lucinidae) from cold seep of the South China Sea Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-27 Yingyi Jiao, Minxiao Wang, Yang Guo, Junlong Zhang
The increasing discoveries of new species of the family Lucinidae in the last two decades indicated a surprising diversity of chemosynthetic lucinids in the deep sea, especially in the Indo-West Pacific. However, only a few records have been reported from the South China Sea. A new lucinid species Elliptiolucina subovalissp. nov. is here reported from a deep-sea cold seep site of the South China
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A new short brown unpatterned moray eel (Anguilliformes, Muraenidae) from the southeast coast of India, Bay of Bengal Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-23 Paramasivam Kodeeswaran, Ganesan Kantharajan, Anil Mohapatra, T. T. Ajith Kumar, Uttam Kumar Sarkar
Gymnothorax tamilnaduensissp. nov., a new species of short brown unpatterned moray, is described, based on four specimens ranging from 272–487 mm total length collected from the trawl bycatch landings at Mudasalodai fish landing centre, off Cuddalore coast, Tamil Nadu, southeast coast of India. The new species is distinguished by the following combination of characters: origin of dorsal fin at middle
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Phylogenetic revision of Echinolaophonte Nicholls (Copepoda, Harpacticoida, Laophontidae T. Scott) including the establishment of two new genera and two new species Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-20 Sung Joon Song, Sang-kyu Lee, Mijin Kim, Kai Horst George, Jong Seong Khim
The record of a new species of Echinolaophonte Nicholls, 1941 (Copepoda, Harpacticoida, Laophontidae) from Jeju Island (Korea) formed the basis for a detailed and exhaustive phylogenetic revision of the genus. Comparison of all 15 species currently assigned to Echinolaophonte (including the new Korean species) revealed that its current composition cannot be maintained. The phylogenetic relationships
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A new species of the genus Siler Simon, 1889 (Araneae, Salticidae, Chrysillini) from India Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-09 John T. D. Caleb, Ayush Parag, Aniruddha Datta-Roy
A new chrysilline jumping spider species belonging to the genus Siler Simon, 1889 is described from Odisha, India. Detailed morphological descriptions, illustrations of the male palp and female genitalia and phylogenetic relationships of the new Siler species are presented. Phylogenetic analysis reveals that the new species is sister to a clade of predominantly Southeast Asian Siler species. Furthermore
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First record and description of three new species in the land snail genus Diplommatina Benson, 1849 (Caenogastropoda, Diplommatinidae) from Satun Province, Thailand Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-07 Tuangthong Boonmachai, Elizabeth A. Bergey, Nattawadee Nantarat
The micro land snail genus Diplommatina (family Diplommatinidae) is widely distributed in Southeast Asia and includes many endemic species. Three new species of Diplommatina are described from Satun Province in southern Thailand. Diplommatina bulonensissp. nov., D. laemsonensissp. nov. and D. prakaiphetensissp. nov. are distinguished from other species in the genus by their shell size and shape, the
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DNA barcoding of the genus Alburnoides Jeitteles, 1861 (Actinopterygii, Cyprinidae) from Anatolia, Turkey Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-06 Halim Canoglu, Ismail Aksu, Davut Turan, Yusuf Bektas
The present study investigated the ability of DNA barcoding to reliably identify the endemic freshwater species in Turkey, known as biodiversity hotspots. The barcode region (652 bp) of the mitochondrial cytochrome c oxidase subunit I (COI) was used to barcode 153 individuals from 13 morphologically identified species of the genus Alburnoides. Based on the Kimura two-parameter (K2P) evolution model
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Another giant species of the microhylid frog genus Cophixalus Boettger, 1892 from the mountains of Papua New Guinea and first records of procoracoids in the genus Zoosyst. Evol. (IF 2.0) Pub Date : 2023-03-01 Rainer Günther, Chris Dahl, Stephen J. Richards
A new arboreal species of the microhylid genus Cophixalus Boettger, 1892 is described from montane rainforest on Papua New Guinea’s central cordillera. With a male SUL exceeding 44.0 mm, the new species is among the largest members of the genus; the only other Papuan species known to reach this size is C. riparius Zweifel, 1962. The new species differs from C. riparius in a small number of mensural
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Chromatic polymorphism in Trichomycterus albinotatus (Siluriformes, Trichomycteridae), a mountain catfish from south-eastern Brazil and the role of colouration characters in trichomycterine taxonomy Zoosyst. Evol. (IF 2.0) Pub Date : 2023-02-23 Wilson J. E. M. Costa, José Leonardo O. Mattos, Pedro F. Amorim, Beatrizz O. Mesquita, Axel M. Katz
Colouration is an important tool for systematists inferring species limits and phylogenetic relationships of teleost fishes, but the use of colouration variation in trichomycterine catfish systematics has generated some controversy. We first report and describe the occurrence of four, geographically disjunct colour morphs in Trichomycterus albinotatus, endemic to south-eastern Brazil, as well as ontogenetic
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Four new species of coral- and rock-boring polychaetes Daylithos (Annelida, Flabelligeridae) from the Pacific Ocean Zoosyst. Evol. (IF 2.0) Pub Date : 2023-02-23 Naoto Jimi, Toshihiko Fujita, Sau Pinn Woo
Four new species of Daylithos (Flabelligeridae, Annelida) are described, based on specimens collected from rocks and corals of Japan and Malaysia. Daylithos, contains one species, D. parmatus, currently reported from Japan. However, the specimens described in previous reports were unable to be located and thus deemed lost. Therefore, it was unclear whether the specimens described as D. parmatus in
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Species delimitation, molecular phylogeny and historical biogeography of the sweetlips fish (Perciformes, Haemulidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-02-23 Ehsan Damadi, Faezeh Yazdani Moghaddam, Mehdi Ghanbarifardi
The subfamily Plectorhinchinae (sweetlips) is composed of poorly-known species with high commercially and ecologically values that exhibit phenotypic plasticity and various morphologies. Few studies have assessed the validity of sweetlips, intergeneric relationships and evolutionary survey in this subfamily, which have not yet been resolved. This study investigated the DNA sequences of (1) the mitochondrial
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Two new Stenaelurillus species (Araneae, Salticidae, Aelurillina) from Western Ghats, India Zoosyst. Evol. (IF 2.0) Pub Date : 2023-02-02 Puthoor Pattammal Sudhin, Souvik Sen, John T. D. Caleb
Two new species – Stenaelurillus megamalaisp. nov. (♂♀) from the colorful group and Stenaelurillus neyyarsp. nov. (♂♀) from the black and white group – are described from the southern Western Ghats of India. Detailed morphological descriptions, illustrations, as well as the distribution maps are provided. New distributional data for three other species, Stenaelurillus albus Sebastian, Sankaran, Malamel
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First molecular identification of the trematode Maritrema bonaerense Etchegoin & Martorelli, 1997 (Plagiorchiida, Microphallidae) from its intermediate hosts, the gastropod Heleobia australis (d’Orbigny, 1835) (Littorinimorpha, Cochliopidae) and the crab Neohelice granulata (Dana, 1851) (Decapoda, Varunidae) in Argentina Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-26 Lorena Martinez, Carmen Gilardoni, Cintia Medina, Juan José Lauthier, Florencia Cremonte, Jorge Etchegoin
The genus Maritrema Nicoll, 1907 (Platyhelminthes, Trematoda, Plagiorchiida, Microphallidae) comprises cosmopolitan species that predominantly parasitize birds. Although approximately 65 species have been described worldwide, including 6 for Argentina, molecular data referring to Maritrema species are still scarce worldwide, especially in South America. Unfortunately, this lack of references for nucleotide
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Filling the gap: Noteworthy herpetological discoveries in North West Province, South Africa Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-26 Krystal A. Tolley, Nicolas S. Telford, Buyisile G. Makhubo, R. John Power, Graham J. Alexander
The North West Province, South Africa, is centrally situated in southern Africa and is characterised by savannah with a mesic, temperate climate in the east and a hot, arid climate in the west. While the eastern region is fairly well-documented for herpetofauna, the arid central and western regions are poorly surveyed. Given that the Province has been targeted by the national government for development
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A contribution on the morphometrics of the thick-clawed crayfish Pontastacus pachypus (Rathke, 1837) (Decapoda, Astacoidea, Astacidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-24 Aiman Imentai, Martin Bláha, Lukáš Veselý, Jiří Křišťan, Tomas Policar
The thick–clawed crayfish Pontastacus pachypus (Rathke, 1837) is an endangered, and the least known, crayfish species in Europe. Currently, detailed information regarding the morphology, ecology and reproduction of thick–clawed crayfish is outdated. This study presents, for the first time, detailed photographs of the thick-clawed crayfish, and updated information on distinctive morphological characters
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Taxonomic revision and re-description of Ateuchosaurus pellopleurus (Hallowell, 1861) (Reptilia, Squamata, Scincidae) with resurrection of A. okinavensis (Thompson, 1912) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-20 Tomohisa Makino, Takafumi Nakano, Taku Okamoto, Tsutomu Hikida
The scincid lizard Ateuchosaurus pellopleurus (Hallowell, 1861) has been recognized as a single species widely distributed in the Osumi, Tokara, Amami, and Okinawa Groups of the Ryukyu Archipelago, southern Japan. However, a recent molecular phylogenetic study suggested that this skink should be divided into two species: one distributed in the Osumi to Amami Groups, and another distributed in the Okinawa
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Can you find me? A new sponge-like nudibranch from the genus Jorunna Bergh, 1876 (Mollusca, Gastropoda, Discodorididae) Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-13 Yara Tibiriçá, Jenny Strömvoll, Juan Lucas Cervera
The nudibranch diversity of the western Indian Ocean is comparatively one of the least studied in the world. In this paper a sponge-like Discodoridae nudibranch Jorunna liviaesp. nov. is described. The description is based on integrative anatomy, including molecular analysis of two genes (the mitochondrial COI and the nuclear H3), dissections, electron microscopy (SEM) of buccal elements, micro tomography
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Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-09 David J. Wildish, John H. McDonald
Hypotheses concerning the modern distribution of Orchestia gammarellus (Crustacea, Amphipoda, Talitridae) and its causes in the North Atlantic are discussed. The synanthropic dispersal hypothesis of Henzler and Ingólfsson (2008) considers O. gammarellus as originating on the eastern shore of the North Atlantic and being transported by humans to Iceland and the western Atlantic shore (Newfoundland and
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Additions to the distribution of Sudanese scorpions Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-06 Manal Siyam, Jason A. Dunlop, František Kovařík, Abubakr Mohammad
Six species of scorpion (Arachnida: Scorpiones) are documented from eighteen localities in seven different states within the Republic of the Sudan. Combining this new data with historical records in the Sudan Natural History Museum and the published literature enables the first provisional distribution maps for Sudanese scorpions. New state records could be added for three medically significant species:
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A freshwater mussel species reflects a Miocene stream capture between the Mekong Basin and East Asian rivers Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-06 Ekaterina S. Konopleva, Ivan N. Bolotov, Ilya V. Vikhrev, Khamla Inkhavilay, Mikhail Yu. Gofarov, Alexander V. Kondakov, Alena A. Tomilova, Yulia E. Chapurina, Tu Van Do, John M. Pfeiffer, Manuel Lopes-Lima, Arthur E. Bogan
Freshwater mussels belonging to the genus Cristaria Schumacher, 1817 (Bivalvia: Unionidae) are widespread from Mongolia to Indochina while the range of one species, C. plicata (Leach, 1814), covers two biogeographic subregions, i.e., East Asian (Amur River to Vietnam) and Sundaland (Mekong River basin). We present here a taxonomic revision of the nominal taxon Anodonta bellua Morelet, 1866 which was
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A new freshwater amphipod (Amphipoda, Gammaridae), Gammarus tumaf sp. nov. from the Gökgöl Cave, Türkiye Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-06 Murat Özbek, İsmail Aksu, Hazel Baytaşoğlu
A new amphipod species belonging to the genus Gammarus is described from the Gökgöl Cave, Zonguldak Province, Türkiye. The newly-identified species is relatively small (13 mm) and is a member of the Gammarus pulex-group by the presence of numerous long setae along the posterior margins of pereopods 3 and 4. The specimens were sampled from a shallow pond located in the dark zone (about 1 km inside the
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Taxonomic review of the Chondrostoma (Teleostei, Leuciscidae) species from inland waters of Turkey: an integrative approach Zoosyst. Evol. (IF 2.0) Pub Date : 2023-01-06 Fahretti̇n Küçük, Yılmaz Çi̇ftçi, Sali̇m Serkan Güçlü, Ayşe Gül Mutlu, Davut Turan
The genus Chondrostoma (Leuciscidae: Leuciscinae), composed of small to medium-sized fish with a scraper feeding characteristic, is distributed in the West and Middle East, Caucasus, Europe and Northern Mediterranean drainages. This genus spreads across Anatolia and Thrace, with the exception of Göksu and Eşen rivers in Turkey’s Mediterranean basin. It is also difficult to understand the systematics
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Rock island melody remastered: two new species in the Afroedura bogerti Loveridge, 1944 group from Angola and Namibia Zoosyst. Evol. (IF 2.0) Pub Date : 2022-11-21 Werner Conradie, Andreas Schmitz, Javier Lobón-Rovira, François S. Becker, Pedro Vaz Pinto, Morgan L. Hauptfleisch
Newly collected material from northern Namibia’s Otjihipa Mountains and west-central Angola allowed us to revisit the Afroedura bogerti Loveridge, 1944 group. The employment of additional gene markers, including nuclear markers, allowed us to identify two new species in the group and infer species boundaries and potential speciation events in Afroedura from southwestern Africa. The new Namibian material
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A new cryptic species of land snail from the Northern Territory, Australia (Stylommatophora, Camaenidae, Parglogenia) Zoosyst. Evol. (IF 2.0) Pub Date : 2022-10-31 Frank Köhler, Michael Shea
Parglogenia cobourgensissp. nov., a new species of camaenid land snail is described from Cobourg Peninsula, Top End of the Northern Territory in Australia. This new species has a shell that is identical to the type species of the genus, Parglogenia pelodes, which also occurs in the Top End. However, both species clearly differ in their reproductive anatomy and are also well-differentiated in terms
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A new species of crayfish of the genus Cherax from Indonesian New Guinea (Crustacea, Decapoda, Parastacidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2022-10-24 Christian Lukhaup, Rury Eprilurahman
A new species of the genus Cherax is described and illustrated. Cherax wagenknechtaesp. nov., endemic to the Beraur and Klasabun River drainages in the western part of the Kepala Burung (Vogelkop) peninsula, West Papua, Indonesia, is described, figured and compared with its closest relatives, Cherax pulcher Lukhaup, 2015. The new species may be easily distinguished from Cherax pulcher by the shape
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A new species of New Guinea Worm-Eating Snake (Serpentes, Elapidae, Toxicocalamus Boulenger, 1896) from Western Highlands Province, Papua New Guinea Zoosyst. Evol. (IF 2.0) Pub Date : 2022-10-05 Jackson R. Roberts, Bulisa Iova, Christopher C. Austin
We describe a new species of New Guinea Worm-Eating Snake (Elapidae: Toxicocalamus) from a specimen in the reptile collection of the Papua New Guinea National Museum and Art Gallery. Toxicocalamus longhagensp. nov. can be easily distinguished from other species of this genus by the presence of paired subcaudals, a preocular scale unfused from the prefrontal scale, a prefrontal distinct from the internasal
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Multigene phylogeny of the Indo–West Pacific genus Enosteoides (Crustacea, Decapoda, Porcellanidae) with description of a new species from Australia Zoosyst. Evol. (IF 2.0) Pub Date : 2022-10-04 Alexandra Hiller, Bernd Werding
The porcellanid genus Enosteoides Johnson, 1970, currently containing six species, was raised in the 1970s to contain aberrant Indo–West Pacific forms of the diverse and cosmopolitan genus Porcellana Lamarck, 1801. Here, we describe the most aberrant form as Enosteoides spinosussp. nov., from the northeast and northwest coasts of Australia and present results on phylogenetic reconstructions of the
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An unexpected occurrence: discovery of the genus Cybaeopsis Strand, 1907 in Europe with the description of a new species from Italy (Arachnida, Araneae, Amaurobiidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2022-09-20 Francesco Ballarin, Paolo Pantini
We report on the unexpected finding of a new species of the genus Cybaeopsis Strand, 1907, C. lodoviciisp. nov. from the Northern Apennine Mountains in Italy. This is the first documented record of a Cybaeopsis species in Europe. Other currently known species of this genus have been previously recorded in North America, the Russian Far-East and Japan. The new species is illustrated and described based
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Phylogenetic position of the relict South American genus Idiopyrgus Pilsbry, 1911 (Gastropoda, Truncatelloidea), with the description of two new cave species Zoosyst. Evol. (IF 2.0) Pub Date : 2022-09-14 Rodrigo B. Salvador, Fernanda S. Silva, Maria E. Bichuette
Idiopyrgus is a relict genus of freshwater snails from Brazil traditionally classified in the family Pomatiopsidae. Herein, we use molecular data from newly acquired specimens to test that classification through Bayesian inference phylogenetic analysis. We conclude that Idiopyrgus belongs in the Gondwanan family Tomichiidae, together with the African genus Tomichia and the Australian genus Coxiella
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A new rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand Zoosyst. Evol. (IF 2.0) Pub Date : 2022-09-14 Attapol Rujirawan, Siriporn Yodthong, Natee Ampai, Korkhwan Termprayoon, Akrachai Aksornneam, Bryan L. Stuart, Anchalee Aowphol
We describe a new species of the gekkonid genus Cnemaspis from Erawan National Park in Kanchanaburi Province of western Thailand. Molecular phylogenetic analyses, based on the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs, revealed that Cnemaspis auriventralissp. nov. is nested within the C. siamensis group and is closely related to C. huaseesom, but has uncorrected pairwise genetic
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Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil Zoosyst. Evol. (IF 2.0) Pub Date : 2022-09-08 Gabriel de Carvalho Deprá, Gastón Aguilera, Dario R. Faustino-Fuster, Axel M. Katz, Valter M. Azevedo-Santos
A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely
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A new genus of Pseudospirobolellidae (Diplopoda, Spirobolida) from limestone karst areas in Thailand, with descriptions of three new species Zoosyst. Evol. (IF 2.0) Pub Date : 2022-08-19 Piyatida Pimvichai, Henrik Enghoff, Somsak Panha, Thierry Backeljau
A new genus of the millipede family Pseudospirobolellidae, Siliquobolellusgen. nov., is described from limestone mountains in Thailand, based on three new species, viz. Siliquobolellus amicusdraconisgen. et sp. nov. from Uthaithani Province, Siliquobolellus constrictusgen. et sp. nov. from Prachuap Khiri Khan Province and Siliquobolellus prasankokaegen. et sp. nov. (type species) from Lampang Province
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Pycnogonida (Arthropoda) from Museu de Ciências Naturais, Rio Grande do Sul, Brazil Zoosyst. Evol. (IF 2.0) Pub Date : 2022-07-20 Rudá Amorim Lucena, Martin Lindsey Christoffersen
Five species were identified in the studied collection: Colossendeis megalonyx Hoek, 1881, first record for Uruguay, Ascorhynchus corderoi du Bois-Reymond Marcus, 1952 and Pallenopsis candidoi Mello-Leitão, 1949, with extended ranges, Pallenopsis patagonica (Hoek, 1881), a species complex recently analysed with molecular data and Ammothea tetrapoda, recorded previously for Uruguayan waters. Our study
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Two new species of the genus Floresorchestia (Crustacea, Amphipoda, Talitridae) from Amphawa Estuary, Samut Songkhram Province, Thailand Zoosyst. Evol. (IF 2.0) Pub Date : 2022-07-15 Anotai Suklom, Tosaphol Saetung Keetapithchayakul, Azman Abdul Rahim, Koraon Wongkamhaeng
Two new species of Floresorchestia (Crustacea: Amphipoda) are described from Amphawa Estuary, Samut Songkhram Province, Thailand. Floresorchestia amphawaensissp. nov. is a riparian-hoppers living near agricultural and urban areas, being distinguished by the following character states: left mandible lacinia mobilis 4-dentate; gnathopod 2 palm reaching about 34%; telson as broad as long, with four robust
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On the edge of the Shivaliks: An insight into the origin and taxonomic position of Pakistani toads from the Duttaphrynus melanostictus complex (Amphibia, Bufonidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2022-07-13 Daniel Jablonski, Rafaqat Masroor, Sylvia Hofmann
The common Asian toad Duttaphrynus melanostictus (Schneider, 1799) complex has a wide distribution ranging from western foothills of the Himalaya to the easternmost range of the Wallacea, with the evidence of human-mediated introductions to some other areas. In the entire distribution range, the complex is formed by several evolutionary clades, distributed mostly in South-East Asia with unresolved
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Mitochondrial characteristics of Pseudohynobius flavomaculatus a protected salamander in China, and biogeographical implications for the family Hynobiidae (Amphibia, Caudata) Zoosyst. Evol. (IF 2.0) Pub Date : 2022-07-13 Yu Zhang, Meng Wang, Ruli Cheng, Yang Luo, Yingwen Li, Zhihao Liu, Qiliang Chen, Yanjun Shen
Pseudohynobius flavomaculatus a provincially-protected salamander species, inhabits mountainous areas of Chongqing and surrounding provinces in China. In the present study, the complete mitochondrial genome of P. flavomaculatus was sequenced and analyzed. The mitogenome is 16,401 bp in length and consisted of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region
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Rediscovery after 25 years – first photographic documentation and DNA barcoding of the deep-sea pycnogonid species Ascorhynchus hippos Turpaeva, 1994 (Chelicerata, Pycnogonida, Ascorhynchidae) from the Kuril-Kamchatka Trench Zoosyst. Evol. (IF 2.0) Pub Date : 2022-07-06 Lisa Wolf, Roland R. Melzer, Tobias Lehmann
The female specimen of Ascorhynchus hippos Turpaeva, 1994 was collected in 2015 during the Russian-German deep-sea expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) at the abyssal western slope of the Kuril-Kamchatka Trench at a depth of 4469 m using a camera-epibenthic sledge. It is the first record of this species since the discovery of one female holotype and one male paratype in 1990. Ascorhynchus
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A new brackish tanaidacean, Sinelobus kisui sp. nov. (Crustacea, Peracarida, Tanaidacea), from Japan, with a key to Sinelobus species and barcode information from two loci Zoosyst. Evol. (IF 2.0) Pub Date : 2022-06-29 Kyoko Hirano, Keiichi Kakui
We describe the new brackish tanaidid species Sinelobus kisuisp. nov. from Hagi, Yamaguchi, Japan. Sinelobus kisui is similar to S. barretti and S. vanhaareni in having antennal article 2 with one outer distal seta, the dorsodistal crotchet on pereopods 2 and 3 carpi shorter than half propodus length, and pereopodal carpi 2–6 with five distal crotchets, but differs from them in having (1) the inner
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Addition to the known diversity of Chinese freshwater planarians: integrative description of a new species of Dugesia Girard, 1850 (Platyhelminthes, Tricladida, Dugesiidae) Zoosyst. Evol. (IF 2.0) Pub Date : 2022-06-29 Yi Liu, Xiao-Yu Song, Zhong-Yin Sun, Wei-Xuan Li, Ronald Sluys, Shuang-Fei Li, An-Tai Wang
The present paper describes a new species of freshwater flatworm of the genus Dugesia from Guizhou province, China, based on an integrative approach, combining morphological, histological and molecular information. This new species, Dugesia gemmulata Sun & Wang, sp. nov., is characterized by the ventral part of the most posterior section of the bursal canal being provided with a voluminous, ellipsoidal