Previous issue Latest issue

Acta Entomologica Musei Nationalis Pragae

2021
Volume 61 - Number 1
published on: 3rd February 2021
61 (1)
Fikáček Martin, Matsumoto Keita, Perkins Philip, Prokin Alexander, Sazhnev Alexey, Litovkin Stanislav, Jäch Manfred A.The family Epimetopidae (Coleoptera: Hydrophiloidea): review of current knowledge, genus-level phylogeny, and taxonomic revision of EupotemusActa Entomologica Musei Nationalis Pragae 61(1): 1-34
Abstract: Epimetopidae are a small beetle family of the superfamily Hydrophiloidea, comprising 72 described species in three genera: the American Epimetopus Lacordaire, 1854 (56 species), Asian Eumetopus Balfour-Browne, 1949 (eight species) and African Eupotemus Ji & Jäch, 1998 (eight species, of which six are described as new here). In this study we illustrate and compare the adult morphology of all three genera and generate the first DNA sequences for Eumetopus and Eupotemus. The morphological data and sequences of four genes (cox1, 16S, 18S and 28S) are used to reconstruct phylogenetic relationships among genera. Both strongly support the monophyly of Epimetopidae, reveal Eumetopus as the earliest diverging taxon and Epimetopus + Eupotemus as a strongly supported clade with numerous synapomorphies. The reciprocal monophyly of Epimetopus and Eupotemus is strongly supported by DNA data but not in the morphological analysis which reveals Epimetopus paraphyletic. Eumetopus, despite being the earliest branching clade, is characterized by many unique derived structures, e.g. by the presence of the sperm pump in males (unique in Hydrophiloidea). The available data on the biology of Epimetopidae indicate that most species inhabit sandy to muddy margins of streams or rivers. Females of all three genera carry egg cases; Epimetopidae hence are one of three independent lineages of Hydrophiloidea in which this behavior evolved. Larvae are only known for Epimetopus and are characterized by morphological adaptations for feeding by piercing and sucking, a closed tracheal system and abdominal gills; larvae of Eumetopus and Eupotemus remain unknown and further research is needed to confirm whether they show the same adaptations as Epimetopus. The taxonomy of the African genus Eupotemus is re­vised, with six species described as new: E. bilobatus sp. nov. (Nigeria), E. cameroonensis sp. nov. (Cameroon), E. ophioglossus sp. nov. (Gabon, Togo), E. smithi sp. nov. (Côte d’Ivoire), E. taianus sp. nov. (Côte d’Ivoire) and E. uluguru sp. nov. (Tanzania). Eupotemus limicola Delève, 1967 is fixed as the type species of the genus according to ICZN (1999: Art. 70.3). New records of Eumetopus species are provided (E. acutimontis Ji & Jäch, 1998 from Vietnam, E. bullatus (Sharp, 1875) from India: Maharashtra, E. flavidulus (Sharp, 1890) from India: Maharashtra and Andhra Pradesh, E. maindroni (Régimbart, 1903) from India: Maharashtra and Gujarat, and E. weigeli Skale & Jäch, 2003 from India: Uttarakhand). The habitus of all species is illustrated. An updated checklist of the Epimetopus species is provided, and records of two specimens of the E. costatus group from Zambia and Saudi Arabia are considered to result from either accidental introductions or mislabelling.Published online: 3rd February 2021
Yin Zi-Wei, Li NingEight new species and additional records of the Pselaphodes complex from Laos and Vietnam, with a key to known species (Coleoptera: Staphylinidae: Pselaphinae)Acta Entomologica Musei Nationalis Pragae 61(1): 35-53
Abstract: The diversity of the Pselaphodes complex of genera (Pselaphinae: Tyrini) is insufficiently documented in Southeast Asia. In this paper eight new species are described and illustrated from Laos and Vietnam: Labomimus cavicornis sp. nov., Labomimus cucphuong sp. nov., Pselaphodes banphabat sp. nov., Pselaphodes dalatensis sp. nov., Pselaphodes jendeki sp. nov., Pselaphodes nongfa sp. nov., Pselaphodes olexai sp. nov., and Pselaphodes parapectinatus sp. nov. New country or provincial records are provided for ten known species: Labomimus bannaus Yin & Li, 2013, Labomimus maolan Zhang, Li & Yin, 2019, Labomimus shii (Yin & Li, 2012), comb. nov. (transferred from Pselaphodes Westwood, 1870), Linan fortunatus Yin & Li, 2013, Paralasinus gigas Hlaváč & Nomura, 2001, Pselaphodes hainanensis Yin & Li, 2013, Pselaphodes incisus Huang, Li & Yin, 2018, Pselaphodes linae Yin & Li, 2012, Pselaphodes paraculeus Huang, Li & Yin, 2018, and Taiwanophodes magnus Bekchiev, 2010. An identification key to the 26 species of the complex that occur in Laos and Vietnam is provided.Published online: 18th February 2021
Fery Hans, Hájek JiříNomenclatural and taxonomic notes on some species of Gyrinidae (Coleoptera)Acta Entomologica Musei Nationalis Pragae 61(1): 55-71
Abstract: Nomenclatural notes on the names of several species in the family Gyrinidae are provided. Six specific names are found to be junior homonyms. Three of them are replaced by nomina nova: Aulonogyrus marginatus (Aubé, 1838) by Aulonogyrus charlesaubei nom. nov., Gyrinus dubius Wallis, 1926 by Gyrinus suspectus nom. nov., and Macrogyrus (Andogyrus) colombicus australis (Brinck, 1977) by Macrogyrus (Andogyrus) colombicus brincki nom. nov. The other three junior homonyms were never considered congeneric with senior homonyms after the year 1899, and thus cannot not be replaced by new names: Gyretes dorsalis (Brullé, 1837), Macrogyrus australis (Brullé, 1835), and Andogyrus glaucus (Aubé, 1838); it is proposed that these names will be conserved by a ruling of the International Commission on Zoological Nomenclature. It is found that Enhydrus sulcatus (Forsberg, 1821) is a primary homonym and a junior subjective synonym of Enhydrus sulcatus (Wiedemann, 1821) in Wiedemann & Germar (1821). The neotype is designated for Gyrinus striatus Fabricius, 1792, which is a senior primary homonym and a senior subjective synonym of G. striatus Olivier, 1792 (both currently in Aulonogyrus Motschulsky, 1853). Gyrinus striatus was published by Olivier not only in 1792, but again in the year 1795 (so far treated as the correct publishing year). To stabilise the nomenclature, one and the same specimen is designated simultaneously as the neotype for Gyrinus striatus Olivier, 1792, and G. striatus Olivier, 1795, and thus both names become objective synonyms. Gyrinus ovatus Klug, 1829 is a senior subjective synonym of Gyrinus gibbus Aubé, 1838 syn. nov. and of Gyrinus apicalis Sharp, 1878 syn. nov. Gyrinus racenisi Ochs, 1953 must be used as the valid name for Gyrinus ovatus sensu Aubé (1838b) (nec Klug 1829). Lectotypes are designated for Gyrinus apicalis Sharp, 1878, Gyrinus gibbus Aubé, 1838, Gyrinus ovatus Klug, 1829, and Gyrinus paykulli Ochs, 1927b. Type specimens and diagnostic characters are illustrated for G. striatus Fabricius, G. striatus Olivier, G. ovatus Klug, G. racenisi and G. paykulli.Published online: 24th February 2021
Liston Andrew, Prous MarkoStenocephus janseni sp. nov., a new species of stem-sawfly from Germany (Hymenoptera: Cephidae)Acta Entomologica Musei Nationalis Pragae 61(1): 73-81
Abstract: Stenocephus janseni sp. nov. (Hymenoptera: Cephidae) is described from Brandenburg, eastern Germany, known only from the female holotype. It possesses an unusual combination of “generic” morphological characters, which makes its placement in Stenocephus Shinohara, 1999 provisional. Compared to other Stenocephus species, differences in the morphology of the lancet are particularly striking. Genetic data for S. janseni sp. nov. place it unequivocally in the Hartigiini, but rather distantly from other genera of this tribe which have so far been sequenced. The three previously described Stenocephus species are recorded from the East Palaearctic. No genetic data are currently available for these. Pachycephus nigratus Dovnar-Zapolskij, 1931, comb. restit., is no longer treated as belonging to Phylloecus Newman, 1838, but as a member of the genus in which it was originally described.Published online: 1st March 2021
González-Obando Ranulfo, Carrejo-Gironza Nancy, Mendivil-Nieto Julián, García Aldrete Alfonso NeriNeurostigma (Psocodea: Psocomorpha: Epipsocidae) from Colombia: new species and an identification keyActa Entomologica Musei Nationalis Pragae 61(1): 83-98
Abstract: Upon examination of recently collected epipsocid barklice from natural areas of Colombia, five new species of Neurostigma Enderlein, 1900 were found: N. lienhardi sp. nov., N. mockfordi sp. nov., N. newi sp. nov., N. thorntoni sp. nov., and N. valderramae sp. nov. They are here described and illustrated. A cladistic analysis of 32 morphological characters indicates that Neurostigma is monophyletic. An updated key for the identification of males of the described species of the genus is presented.Published online: 10th March 2021
Anichtchenko Alexander, Minkina Lukasz, Vasiljeva Anastasija, Medina Milton N. D. A review of the genus Rhyparus in the Philippines, with descriptions of two new species from Mindanao (Coleoptera: Scarabaeidae: Aphodiinae)Acta Entomologica Musei Nationalis Pragae 61(1): 99-111
Abstract: Species of the genus Rhyparus Agassiz, 1846 (Coleoptera: Scarabaeidae: Aphodiinae) from the Philippines are reviewed. Altogether six species are recorded, including description of two species new to science from Mindanao Island: R. flavohirtus sp. nov. and R. mindanaoensis sp. nov. Rhyparus gracilis Arrow, 1905 and R. barclayi Masumoto, Ochi & Ho, 2019 are recorded from the Philippines for the first time. All species are diagnosed and illustrated, including photos of epipharyngi and male genitalia. A key to Philippine Rhyparus species is provided.Published online: 16th March 2021
Gao Cuiqing, Zhou YuReview of the genus Cavelerius (Heteroptera: Blissidae) with descriptions of three new species from China and Southeast AsiaActa Entomologica Musei Nationalis Pragae 61(1): 113-132
Abstract: The species of the genus Cavelerius Distant, 1903 (Hemiptera: Heteroptera: Lygaeoidea: Blissidae) are reviewed based on re-examination of the type images. A total of thirteen species are recognized in this genus, including three new species: Cavelerius nigrivena sp. nov. from Thailand and Laos; Cavelerius parvimaculatus sp. nov. from Thailand, and Cavelerius yunnanensis sp. nov. from China: Yunnan. Cavelerius tinctus (Distant, 1903) is newly recorded from China, and Cavelerius antennatus Slater & Miyamoto, 1963 is newly recorded from India: Meghalaya. A key to all known species of Cavelerius is provided.Published online: 16th April 2021
Gapon Dmitry A.Revision of the genus Exosehirus (Heteroptera: Cydnidae), with the description of two new speciesActa Entomologica Musei Nationalis Pragae 61(1): 133-161
Abstract: The present work is a revision of the Palaearctic burrower bug genus Exosehirus Wagner, 1963 (Heteroptera: Cydnidae: Sehirinae). New data on the morphology and distribution are given. Structures of the female internal ectodermal genitalia and the completely inflated aedeagi are described and illustrated for the first time. An extended differential diagnosis as a comparison of the genus with representatives of all Palaearctic genera of the tribe Sehirini is provided. Based on characters of the terminalia of both sexes, two new species are described: E. elamensis sp. nov. from Southwest Iran, and E. essedonius sp. nov. from Kazakhstan. ‘Exosehirus’ steini (Signoret, 1884) nom. dub. is excluded from the genus Exosehirus and treated as a species incertae sedis. Exosehirus marginatus (Signoret, 1881) is recorded for Azerbaijan for the first time.Published online: 21st April 2021
Liu Tian-tian, Ono Hiroki, Maruyama MunetoshiRevision of the intertidal rove beetle genus Bryothinusa from Japan (Coleoptera: Staphylinidae: Aleocharinae)Acta Entomologica Musei Nationalis Pragae 61(1): 163-201
Abstract: The Japanese species of the intertidal rove beetle genus Bryothinusa Casey, 1904 are revised. Of 17 recognized species in total, six known species (B. algarum Sawada, 1971, B. gangjinensis Ahn & Jeon, 2004, B. minuta (Sawada, 1955), B. nakanei (Sawada, 1955), B. sakishimana Sawada, 1991, B. tsutsuii (Sawada, 1955)) are redescribed and nine new species (B. aikoae sp. nov. from Honshû, B. constricta sp. nov. from Honshû, B. fulvipennis sp. nov. from Honshû and Shikoku, B. hokkaidensis sp. nov. from Hokkaidô and Kyûshû, B. itsuroi sp. nov. from Honshû, Kyûshû and Nansei-shotô, B. moriguchii sp. nov. from Nansei-shotô, B. nigra sp. nov. from Honshû, Shikoku, Kyûshû and Nansei-shotô, B. okinawana sp. nov. from Nansei-shotô, B. yoshigoui sp. nov. from Honshû) are described. Additional descriptions and records for the two species (B. koreana Ahn & Jeon, 2004 and B. japonica Liu, Ono & Maruyama, 2020) which are currently described/redescribed are given. Mouthparts and sexual organs of both sexes of all species are illustrated. A key to the Japanese species and distribution map of these species are provided. The habitats and behaviour of some representatives are reported, and the distributional range related to flight ability is discussed.Published online: 7th May 2021
Wang Ji-ShenNeopanorpa (Mecoptera: Panorpidae) from the Himalayas and adjacent regions, with descriptions of three new speciesActa Entomologica Musei Nationalis Pragae 61(1): 203-212
Abstract: A total of 21 species of the genus Neopanorpa van der Weele, 1909 are currently recorded from the Himalayas and adjacent regions to which three are added herein. I provide a checklist, distributional map and key to these species, with descriptions of the three new species: Neopanorpa liuxingyuei sp. nov., Neopanorpa wuchaoi sp. nov., and Neopanorpa zhengyucheni sp. nov. from Tibet, China. The biology and biogeography for the 21 species of Neopanorpa from this region are briefly discussed.Published online: 13th May 2021