The genera Cestromoecha and Poreuomena of the tribe Poreuomenini in Phaneropterinae are revised and new generic characters are given for both genera, and six new species are described in Poreuomena. The newly described species are P. biaculeatasp. nov., P. ealasp. nov., P. gracilicercatasp. nov., P. ivorianasp. nov., P. matthaeisp. nov., and P. tshuapasp. nov. Based on characters defining the two genera

The world species of the microgastrine genus Paroplitis (Hymenoptera: Braconidae) are revised. Three new species are described, P. horticola Fujie & Fernandez-Triana, sp. nov. and P. japonicus Fujie & Fernandez-Triana, sp. nov. from Japan and P. kakhetiensis Fujie, Japoshvili & Fernandez-Triana, sp. nov. from Georgia. P. vietnamensis van Achterberg & Fernandez-Triana, 2013 is re-described, based on

The sting apparatus of aculeate Hymenoptera is derived from the ovipositor and is their most prominent apomorphy. In contrast to the frequently analysed sclerites of the sting apparatus, the associated musculature has largely been neglected. In this study, we use micro-computed tomography to present a detailed description of the musculature of the sting apparatus of Ampulex compressa (Ampulicidae)

Investigations of type material and new material from the Philippines (Luzon) revealed that Baetis luzonensis Müller-Liebenau, 1982 and B. realonae Müller-Liebenau, 1982 do not belong to Baetis Leach, 1815. A new genus, Philibaetisgen. nov., is described to accommodate both species and both are re-described based on larvae. The new genus is characterised by having a rectangular labrum with a submarginal

The species of three subgenera of the genus Bracon Fabricius (Hymenoptera, Braconidae, Braconinae), i.e. Glabrobracon Fahringer, 1927; Lucobracon Fahringer, 1927; and Uncobracon Papp, 1996 from China are revised and 31 species are recognised, including 11 new species, i.e. Bracon (Glabrobracon) indistinctussp. nov., B. (G.) leptotessp. nov., B. (G.) longistriatussp. nov., B. (G.) megaventrissp. nov

The ground beetle genus Agonum Bonelli, 1810 is a large genus of the tribe Platynini with many species that show high amounts of intraspecific variations, making a correct identification challenging. As part of the German Barcode of Life initiative, this publication provides a comprehensive DNA barcode library for species of Agonum that are reported for Germany. In total, DNA barcodes from 258 beetles

Using high-resolution stereomicroscopy and exploratory data analyses, a taxonomic revision of the cryptic species close to Plagiolepis schmitzii Forel, 1895, called Pl. schmitzii group, was conducted. Morphology was numerically recorded under highly standardised conditions considering absolute size and 16 shape, pubescence and surface characters. A key to the non-parasitic Westpalaearctic species of

Bayesian and parsimony phylogenetic analyses of combined and partitioned datasets of molecular (partial sequences of 28S, wg, COI, and CAD) and morphological (51 characters of adults) data for exemplar taxa of five outgroup and 76 ingroup abacetine carabids resulted in a monophyletic Loxandrina Erwin & Sims, 1984 that is split into Australian and American clades. The genus Loxandrus LeConte, 1853 as

Male and female of Nusalala peruanasp. nov., a flightless hemerobiid from the Andes mountain range of northern Peru, at a height of almost 4000 m, are described, figured and documented as the first record of a brachypterous, flightless species of Nusalala Navás, 1913, from this country. The other two congeneric, brachypterous species are from high altitudes in Colombia and Costa Rica and have been

Two tenthredinid sawfly species are newly recorded in Germany: Pristiphora krausi (Lacourt, 2006) and P. melagoniasp. nov. The latter is also recorded from Greece and Spain. These species belong to the Pristiphora depressa group, as confirmed by genetic data. Additional data are presented for seven other tenthredinid species which have only rarely been recorded in Germany and for which previously-published

A total of 10 species of Enicospilus (Hymenoptera, Ichneumonidae, Ophioninae) have previously been reported from Nepal. Six new species are described here (E. alleni Shimizu sp. nov., E. kakanicus Shimizu sp. nov., E. nepalensis Shimizu sp. nov., E. nikami Shimizu sp. nov., E. phulchokiensis Shimizu sp. nov., and E. tangi Shimizu sp. nov.), and 10 are newly recorded (E. ashbyi Ashmead, 1904, E. bifasciatus

Conflicting hypotheses about the relationships among the major lineages of aculeate Hymenoptera clearly show the necessity of detailed comparative morphological studies. Using micro-computed tomography and 3D reconstructions, the skeletal musculature of the meso- and metathorax and the first and second abdominal segment in Apoidea are described. Females of Sceliphron destillatorium, Sphex (Fernaldina)

Himalcercyon Hebauer, 2002 stat. nov. is elevated to genus rank based on the unique form of its mesoventral elevation. The genus is reviewed, redescribed, and illustrated in detail. Two species are recognized: Himalcercyon mirus (Hebauer, 2002) comb. nov. from Nepal and H. franzisp. nov. from Chinese Himalaya (Xizang Autonomous Region). Both species are illustrated and diagnosed. An updated key to

Tomares hairstreaks comprise about 10 species distributed from Europe and North Africa to Central Asia. The taxonomy of the genus is hampered by the absence of diagnostic characters by which specimens can be unambiguously assigned to species. Our investigation of morphology and DNA barcode variations within and between Tomares species shows that while well-defined species (T. ballus, T. mauritanicus

Very few sawflies using Gentianaceae as larval host plants have been recorded. We identified larvae collected in Austria on Gentiana asclepiadea L. as Tenthredo atra Linnaeus, 1758 and T. propinqua Klug, 1817. If its current taxonomic circumscription as a single species is accepted, T. atra is a highly polyphagous species, whereas T. propinqua may be more specialised: Gentiana asclepiadea is its first

The leafhopper genus Opsius Fieber, 1866 is revised for the Kingdom of Saudi Arabia. Seven species are treated, including three that previously were reported by Dlabola (1979), O. pallasi (Lethierry, 1874), O. tigripes (Lethierry, 1876), and O. versicolor (Distant, 1908). Opsius heydeni (Lethierry, 1876), O. richteri Dlabola 1960, and O. scutellaris (Lethierry, 1874) are reported for the first time

Leaf- and fruit-feeding chrysomelids (Coleoptera) on bananas and plantains (Musaceae, Zingiberales) cause major losses to banana growers in the northern and northeastern regions of India, Bangladesh, and other parts of Southeast Asia. The species composition of these beetles has not been studied so far in India and wrong names or wrong name combinations in the literature have caused confusion. Most

Tropopterus Solier, 1849, precinctive to southern South America, is taxonomically revised. Six new species are described: T. peckorumsp. nov., T. robustussp. nov., T. canaliculussp. nov., T. trisinuatussp. nov., T. minimucrosp. nov., and T. fieldianussp. nov.Merizodus catapileanus Jeannel, 1962, is synonymized with T. montagnei Solier, 1849. Lectotypes are designated for T. montagnei, T. giraudyi Solier

Here we elucidate and justify a DNA barcode approach to insect species description that can be applied to name tens of thousands of species of Ichneumonoidea and many other species-rich taxa. Each description consists of a lateral habitus image of the specimen, a COI barcode diagnosis, and the holotype specimen information required by the International Code of Zoological Nomenclature. We believe this

The larval morphology of the water scavenger beetle Psalitrus yamatensis Hoshina & Satô, 2005 is described based on a specimen collected from Fukuoka Prefecture, Kyushu, Japan. This is the first description of the larval morphology of the hydrophilid genus Psalitrus d’Orchymont, 1919, as well as the first description of larval chaetotaxy of the tribe Omicrini. Species-level identification of the larva

Thirty-nine species of sawfly (Symphyta) are recorded for the first time in Bulgaria. Most of these were collected during early spring of 2018, in the south-east of the country (Burgas and Varna Provinces). Empria aridicola Macek & Prous, sp. nov. is described as new to science from specimens collected in several central, east and south European countries. Lectotypes are designated for Poecilosoma

A new and a previously known species of the genus Zhenia Q. Zhang, 2016 (Eremochaetidae) are illustrated and described based on two males and a female in amber: Zhenia burmensissp. nov. and Z. xiai Q. Zhang, 2016. The male Z. xiai is the first male of this species recorded. The relationships of Archisargoidea (including Eremochaetidae, Zhenia) are reassessed based on male genitalia. The superfamily