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The nests of advanced eusocial ant species can be considered ecological islands with a diversity of ecological niches inhabited by not only the ants and their brood, but also a multitude of other organisms adapted to particular niches. In the current paper, we describe the myrmecophilous behavior and the exocrine glands that enable the staphylinid beetle Dinarda dentata to live closely with its host ants Formica sanguinea. We confirm previous anecdotal descriptions of the beetle's ability to snatch regurgitated food from ants that arrive with a full crop in the peripheral nest chambers, and describe how the beetle is able to appease its host ants and dull initial aggression in the ants.

Four new species of Gyrophaena Mannerheim, 1830 and one of Phanerota Casey, 1906 from southern states of the USA are described and illustrated: G. affinifera Enushchenko, sp.n. (Alabama), G. fontanedai Enushchenko, sp.n. (Alabama, Florida), G. marjakata Enushchenko, sp.n. (Arizona), G. velada Enushchenko, sp.n. (Arizona), and Ph. paradissimilis Enushchenko, sp.n. (Florida). A new species group is erected, the nitidula-group, containing G. nitidula (Gyllenhal 1810), G. pseudonitidula Semenov 2015 and G. fontanedai Enushchenko, sp.n., and a key for the species of this group is given.

A new species, Homalota nanjingensis Cao, Ji & Liu, sp. nov. from Jiangsu province of China, is described and illustrated. Photographs of the body and mouthparts, line drawings of the aedeagus and spermatheca are provided.

Corotoca Schiødte, 1853 is a Neotropical genus of termitophiles beetles, with five species, and its description marks the first record of insects associated with termites. A new species, Corotoca fontesi sp. nov., from Brazil, is described and illustrated, and a taxonomical problem regarding to the identification and nomenclatural status of two species, Corotoca phylo Schiødte, 1853 and Corotoca seeversi Fontes, 1977, is solved. Therefore, Corotoca seeversi is proposed as a new junior synonym of C. phylo, and the material identified as C. phylo housed in the Museum of Zoology of the University of São Paulo, Brazil (MZUSP) is recognized as a new species, Corotoca fontesi sp. nov. New morphological and sexual dimorphism data in the species, and solution of some messy informations about the genus present in the literature are also present.

The genus Haploglossa Kraatz is recorded for the first time in Korea with a description of Haploglossa koreana Song & Ahn, sp. nov. and a redescription of H. villosula (Stephens). A key, habitus photographs and illustrations of the diagnostic characters of the known Korean species are provided.

A taxonomic review of the Acrotona Thomson in the Korean Peninsula is presented. The genus is represented in Korea by seven species including a new species, Acrotona ( Acrotona ) koreana Lee & Ahn, sp. nov. Two new synonyms are proposed: A . ( A .) lutulenta (Sharp) = A . ( A .) suyangsani Paśnik syn. nov., A . ( A .) pseudotenera (Cameron) = A . ( A .) paeksongricus Paśnik syn. nov. Three species [ A . ( A .) lutulenta (Sharp), A . ( A .) pseudotenera (Cameron) and A . ( A .) vicaria (Kraatz)] are reported for the first time in South Korea. A key, descriptions, habitus photographs and illustrations of the diagnostic characters are provided.

In recent surveys carried out in Brazil, we detected two new species of Termitomorpha Wasmann, a genus of Termitogastrina (Aleocharinae, Corotocini). This genus is easily recognizable in the subtribe by the evenly convex and smooth pronotum. The new species are: Termitomorpha sinuosa Caron, Bortoluzzi & Rosa sp. nov., and Termitomorpha alata Caron & Bortoluzzi, sp. nov. Both species are here described and illustrated, including scanning electron photographs. Their host termites were identified as species of Nasutitermes. The key to species of Termitomorpha is updated based on recent literature.

The paper describes the morphological ultrastructure of the previously unknown early (L1) and late larval instars (L2–3) ofDinaraea, including chaetotaxy, pupal cocoon, prepupa, and pupa, based on the saproxylic speciesD.aequataErichson andD.linearisGravenhorst. Diagnostic larval characters for the genusDinaraeaare given for the first time. Morphological differences between mature larvae of these two species relate to the colouration and degree of flattening of the body, details of antennal structure, anterior margin of the labrum, mandibles, and mala. The differences are relatively small, probably because of the similar ecological preferences of both species. As in the case of other aleocharine larvae, L1 inDinaraeadiffers from L2–3 in the lack of some setae on the dorsal surface of the head and thorax, and on the abdominal tergites and sternites; the presence of a subapical seta on the urogomphi; egg bursters on some thoracic and abdominal tergites; a darker antennal segment III; and the relatively longer urogomphi and their apical setae. The differences established in the features of the chaetotaxy of L1 and L2–3 between Athetini (Dinaraea), Oxypodini (Thiasophila) and Homalotini (Gyrophaena) correspond with the molecular marker-based relationships of these taxa.

Myrmedonota Cameron comprises 30 species distributed in Southeast Asia and the New World. Recently, a new species associated with termites was found in southern Brazil. This species, Myrmedonota scientiana Navarro and Caron, newspecies, is described and illustrated, including scanning electron micrographs. The new species differs from the closely affiliated species Mytmedonta xipe Mathis and Eldredge by having yellowish elytra with the posterolateral region brownish to dark brown; apex of median lobe of aedeagus rounded in ventral view; and spermatheca with capsule bluntly conical and with a coiled duct. A previous key to the New World species of the genus is updated to include the new species. This is the second record of a Myrmedonota species found associated with a termite host, and this record also extends the distribution of the genus into South America.

A new staphylinid beetle, Cypha norvegica nov.sp., is described, illustrated and distinguished from similar species within the genus. The type specimens were collected, when swarming, before sunset in an extensively managed grassland in Vågå municipality, Oppland in Norway.

A diagnosis of the subfamily Aleocharinae is provided, as well as a key to the 16 tribes of eastern Canadian Aleocharinae.

Key to British Columbian species of the genus Autalia Leach, of the tribe Autaliini C. G. Thomson, is provided. Three species are included in this account. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

Keys to genera and 12 species of the tribe Tachyusini C.G. Thomson are provided. A review of the species of Brachyusa Mulsant and Rey (2 spp.), Gnypeta C.G. Thomson (6 spp.), Paradilacra Bernhauer (1 sp.), and Tachyusa Erichson (3 spp.) recorded in British Columbia is presented. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

Keys to genera and 44 species of the tribe Oxypodini C.G. Thomson are provided. Calodera bennetti Klimaszewski, sp. n., is described as a new species with the first record of the genus Calodera in BC. A review of BC species of Alfocalea Klimaszewski (1 sp.), Betocalea Klimaszewski (1 sp.), Blepharhymenus Solier (1 sp.), Calodera Mannerheim (1), Crataraea C.G. Thomson (1 sp.), Devia Blackwelder (1 sp.), Gnathusa Fenyes (2 spp.), Megocalea Klimaszewski (1 sp.), Meotica Mulsant and Rey (1 sp), Metocalea Klimaszewski (1 sp.), Mniusa Mulsant and Rey (1 sp.), Neoisoglossa Casey (1 sp.), Neothetalia Klimaszewski (6 spp.), Ocalea Erichson(1sp), Ocyusa Kraatz (1 sp.), Oxypoda Mannerheim (19 spp.), Parocalea Bernhauer (1 sp.), and Phloeopora C.G. Thomson (3 spp.) is presented. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

One species of the tribe Boreocyphini Klimaszewski and Langor recorded in eastern Canada is presented. The following is provided for the species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

One species of Halobrecta C.G. Thomson, of the tribe Taxicerini Lohse is treated herein. The following is provided: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

A checklist of eastern Canadian species of Aleocharinae is provided. The fauna currently accounts for 407 verified recorded species (including one new record) in 96 genera, and 16 tribes. The taxonomic arrangement reflects the latest knowledge of the classification of this group of beetles. Tribes are arranged in taxonomic order; genera are either in taxonomic order or in alphabetical order depending on the current knowledge of the particular taxon; and species within genera are grouped in species groups or are listed alphabetically. The composition of the fauna is presented in a compact linear form with each tribe followed by genera in alphabetical order and number of species in brackets after the genus name.

Progress on the study of aleocharine beetles in eastern Canada during the 26 years since the first Canadian checklist was published is discussed and the accumulation of recorded species during this period is graphically illustrated. The fauna of New Brunswick has gone from nearly unknown (19 species) in 1991 to the most diverse in Canada with 299 species—a more than 15-fold increase. Other provincial faunas that have seen incredible growth in terms of known species composition include Nova Scotia, Newfoundland and Ontario.

One species of Bryothinusa Casey of the tribe Diglottini Jakobson, is treated herein. The following is provided for the species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

Keys to genera and species of the tribe Placusini Mulsant and Rey are provided. A review of one species of Euvira Sharp and seven species of Placusa Erichson recorded in eastern Canada is presented. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

Keys to genera and species of the tribe Hoplandriini Casey are provided. A review of the four species of Hoplandria Kraatz and one species of Platandria Casey recorded in eastern Canada is presented. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

Keys to genera and species of the tribe Lomechusini Fleming are provided. A review of Drusilla Leach (1 sp.), Myrmedonota Cameron (1 sp.), Myrmoecia Mulsant and Rey (1 sp.), Pella Stephens (6 spp.), Platyusa Casey [removed from fauna of Canada], Zyras Stephens (2 spp.), and Xenodusa Wasmann (2 spp.) recorded in eastern Canada is presented. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

To become integrated into an ant society, myrmecophilous parasites must overcome both the defenses and the communication system of their hosts. Some aleocharine staphylinid beetles employ chemical and tactile strategies to invade colonies, where they later consume ant brood and participate in parasitic trophallaxis with host ants. By producing compounds that both appease their hosts and stimulate adoption, the beetles are able to live in and deposit their own eggs in the well defended ant nest. In the current paper, previous findings on the myrmecophilous behavior and morphological features of the staphylinid beetle Lomechusoides (formerly Lomechusa) strumosus are reviewed and re-evaluated. Hitherto unpublished results concerning the beetles' ability to participate in the social food flow of their host ants are reported. Furthermore, we present an analysis and documentation of the behavioral interactions between beetles and host ants during the adoption process, and we report new histological and scanning electron microscopic analyses of the exocrine glands and morphological adaptations that underlie the myrmecophilous behavior of L. strumosus. The main features of L. strumosus are compared with those of the staphilinid myrmecophile Lomechusa (formerly Atemeles) pubicollis. The paper concludes with a description of the life trajectory of L. strumosus and presents a brief history and discussion of the hypotheses concerning the evolution of myrmecophily in L. strumosus and other highly adapted myrmecophilous parasites.

Ecosystem engineers, such as social insects, burrowing mammals, and beavers , have a large physical impact on their environment and create new niches for a diversity of organisms. New species or entire lineages of commensal insects have evolved in response to these new microhabitats, and the hyperdiverse rove beetles (Staphylinidae) are no exception. A well-known assemblage of commensal rove beetles in Central Europe is closely associated with the nests and burrows of mammals and birds. Despite similar temperate biomes and an even greater diversity of suitable host vertebrates in the Nearctic region, this fauna remains poorly known, and its documentation is scattered in collections and the primary literature. This review provides an overview of the rove beetles putatively specialized for life in burrows and nests . A total of 46 species from 7 of the 25 Nearctic subfamilies are known thus far, with most in the Aleocharinae and Staphylininae. Hosts for Nearctic Staphylinidae include groundhog, prairie dogs, ground squirrels, pocket gophers, mountain beaver, gopher tortoise, woodrats, North American beaver and muskrat, and several species of birds. Numerous potential vertebrate hosts remain overlooked, and most known hosts are rarely sampled and then only within a small portion of their distribution. Many new species likely remain to be discovered in these microhabitats.

Keys to the genera and three species of the tribe Hypocyphtini Laporte are provided. A review of species of Cypha Leach, Holobus Solier, and Oligota Mannerheim, recorded in British Columbia is presented. The following is provided for each species: a morphological diagnosis, distribution, information about habitat and methods of collection, key references, colour images of the habitus, and black and white images of the genitalia (median lobe of the aedeagus, spermatheca) and terminal segments of both sexes.

Species of the nominal subgenus of the lomechusine genus Zyras Stephens, 1835 of the southeastern Oriental region are revised. Eighteen species are (re-)described and/or illustrated, six of them for the first time: Zyras (Zyras) latibasalis spec. nov. (Java, tentatively recorded also from Laos), Z. (Z.) rutrilobatus spec. nov. (Laos), Z. (Z.) parvilobatus spec. nov. (Laos), Z. (Z.) hirtiventris spec. nov. (Laos, Vietnam), Z. (Z.) hlavaci spec. nov. (Malaysia: Pahang, Selangor), Z. (Z.) lunatus spec. nov. (Malaysia: Selangor). Eight synonymies are proposed: Zyras bryanti Cameron, 1943 = Z. mortuorum Pace, 1990, syn. nov., = Z. paederinus Pace, 2008, syn. nov.; Zyras nigerrimus Cameron, 1943 = Z. bartolozzii Pace, 2003, syn. nov., = Z. alboterminalis Pace, 2008, syn. nov.; Z. granulipennis Cameron, 1930 = Z. pervariolosus Pace, 2008, syn. nov.; Z. matangensis Cameron, 1943 = Z. daiaccorum Pace, 2008, syn. nov.; Z. montanus (Bernhauer, 1915) = Z. variolatus Pace, 2003, syn. nov.; Z. preangeranus Cameron, 1939 = Z. quadriterminalis Pace, 2008, syn. nov. One species is excluded from Zyras: Myrmedonota modiglianii (Cameron, 1925), comb. nov. Lectotypes are designated for Zyras elegantulus Cameron, 1939, Z. semirufus Cameron, 1939, and Z. flavus Cameron, 1939. Additional records of nine named species are reported. A key to the species recorded from the southeastern Oriental region and an updated catalogue of the species of the Palaearctic and Oriental regions are provided. The subgenus is currently represented in the Palaearctic and Oriental regions by a total of 122 described species. Twenty-two species have been recorded from Sunda Islands. The countries with the greatest diversity are China (46 named species), India (20), Indonesia (19), Malaysia (15), Thailand (14), Nepal (12), Laos (11), and Vietnam (8). Nomenclatural Acts Zyras (Zyras) latibasalis spec. nov. – urn:lsid:zoobank.org:act:35276B1A-6492-4F55-8836-91058719625C Zyras (Zyras) rutrilobatus spec. nov. – urn:lsid:zoobank.org:act:67BAD12F-50BC-4983-A8BC-363FA67F01F1 Zyras (Zyras) parvilobatus spec. nov. – urn:lsid:zoobank.org:act:6DBB36A1-C12B-4FA1-B28E-55560D6645C6 Zyras (Zyras) hirtiventris spec. nov. – urn:lsid:zoobank.org:act:73489C67-FB52-4B48-A2E1-BA1F1E55F45D Zyras (Zyras) hlavaci spec. nov. – urn:lsid:zoobank.org:act:F5734436-CE49-4064-8A52-BC7DF9A0EE67 Zyras (Zyras) lunatus spec. nov. – urn:lsid:zoobank.org:act:ACD6BAAB-FE21-415D-903F-1D2CDEFE0607, Contributions to Entomology = Beiträge zur Entomologie, Bd. 67 Nr. 2 (2017)

Pella tianmuensis sp. n., a myrmecophile associated with Lasius (Dendrolasius) spathepus Wheeler, 1910 in West Tianmushan Natural Reserve, Zhejiang, is described, illustrated and distinguished from its congeners.

The aleocharine subtribe Homalotina Heer represents one of the most diverse lineages of Staphylinidae. Despite its wide distribution and diversity, the phylogenetic relationships of the subtribe remain poorly understood. Here, we present the first cladistic analysis of the Homalotina based on morphological data. The subtribe is hypothesized to be a monophyletic group consisting of seven genera (Anomognathus Solier, Cephaloxynum Bernhauer, Holisomimus Cameron, Homalota Mannerheim, Neomalota Cameron, Stenomastax Cameron, and Thecturota Casey). The dataset for phylogenetic analysis comprised 83 characters representing 245 character states derived from adult morphology. These data were analysed using equal weighting and implied weighting schemes (k = 1–6) and results support the monophyly of the subtribe based on two synapomorphic characters (complete postoccipital sutures on head, posterolateral margin of metacoxae with macrosetae) and three homoplastic characters (medial setae on prementum not extended to apex of ligula, medial setae on labium contiguous, posterolateral angle of elytron slightly sinuate). Generic relationships differ in each analysis within the Homalotina (EW, IW with k = 1, 2–4, 5–6) although there are some identical topologies among the IW trees. Clades A, B, C, D, H, J and G were resolved as monophyletic in all weighting regimes. The monophyly of the genera is relatively well supported except for the genera Homalota and Stenomastax. Homalota species were recovered in four independent clades (clade C, D, I, K) and the Stenomastax species were recovered in two independent lineages. Candidates for the possible new genera are discussed. We herein transfer Homalota flavomaculata Bernhauer to the genus Stenomastax, resulting in the new combination [Stenomastax flavomaculata (Bernhauer)]. Our preliminary character correlation tests using phylogenetic pairwise comparisons did not support the hypothesis of association between flattened body form, and subcortical habitat and anterior shift of antennal insertion in Homalotini.

This paper treats 13 species of the subgenus Microdota Mulsant & Rey of Atheta Thomson and 3 species of the genus Clusiota Casey in Canada and Alaska. We report here 4 species new to science, and 3 new provincial records. The following species are new to science: Atheta (Microdota) curtipenis Klimaszewski & Webster, sp. n., Atheta (Microdota) formicaensis Klimaszewski & Webster, sp. n., Atheta (Microdota) macesi Klimaszewski & Webster, sp. n., and Clusiota grandipenis Klimaszewski & Webster, sp. n. The new provincial records are: Atheta (Microdota) pseudosubtilis Klimaszewski & Langor, new to AB, and Atheta (Microdota) subtilis (Scriba), an adventive Palaearctic species new to North America, first reported in LB and NB. The two Clusiota Casey species are reviewed, and their distribution is revised. A female Clusiota impressicollis was discovered in Ontario and is illustrated here for the first time. A key to all Canadian species of the subgenus Microdota and genus Clusiota are provided. Atheta (Microdota) holmbergi Bernhauer and Atheta (Microdota) alesi Klimaszewski & Brunke are transferred here to the subgenus Dimetrota Mulsant & Rey.

A morphology-based cladistic analysis was conducted of the coastal rove-beetle subgeneraEmplenotaCasey andTriocharaBernhauer of the genusAleocharaGravenhorst. We used 36 adult characters from the all tenEmplenotaand threeTriocharaspecies, and two outgroups, resulting in a single tree. The topology within theEmplenotaclade shows a clear pattern of species diversification that correlates well with the biogeographical distribution of this taxon. TheEmplenotaclade was phylogenetically divided into three, consisting of a Nearctic clade forming a sister group relationship with the Eastern Palearctic clade, and a basal Western Palearctic evolutionary grade. In contrast, the geographical origin ofTriochararemains unclear due to a paucity of information and difficulties in interpreting the distributional data.

Fifty-four new Canadian provincial records of aleocharine beetles (Staphylinidae), including three new Canadian records and one new North American record, are presented. Of these, 33 are new provincial records for Saskatchewan, 14 for Alberta, two for British Columbia, three for Manitoba, two for the Northwest Territories and one for the Yukon Territory. The following are new Canadian records: Trichiusa pilosa Casey [formerly reported from Nova Scotia and Ontario as Trichiusa postica Casey], Acrotona recondita (Erichson) and the adventive Palaearctic Atheta nigra (Kraatz), which is also a new North American record. Bionomics information and new locality records are provided. The following new synonyms of Trichiusa pilosa Casey are established: Trichiusa atra Casey, Trichiusa monticola Casey, Trichiusa parviceps Casey, and Trichiusa postica Casey. The numbers of Aleocharinae remaining to be discovered in Canadian provinces and territories are discussed.

A taxonomic study of the genus Thamiaraea Thomson in Korea is presented. The genus and its two species (T. diffinis Sharp and T. japonica Cameron) are new to the Korean Peninsula. A key, redescriptions and illustrations of diagnostic characters are provided.

The scope of this study is to make evaluations on faunistic, ecological and zoogeographical composition of the subfamily Aleocharinae (Coleoptera: Staphylinidae) of the Central Anatolian Region of Turkey. Ninety-three species, belonging to 26 genera and 11 tribes, were detected by field studies between years 2009–2011 in the Central Anatolian Region. It is concluded that among these, one species from Atheta (Atheta camardiensis, Sert et al., 2013) and Gyrophaena (Gyrophaena cagatay, Sert et al., 2013) respectively are new to science and seven species from Atheta, Brachyusa, Ischnopoda and Liogluta are new genera records for Turkey (Sert et al., 2013a). Eight species are endemic for Turkey and 69 species are new records for Central Anatolian Region.

Two new species of Myrmedonota are described from Mexico. Illustrations and a distribution map are provided, as are keys to identify Myrmedonota known from the Nearctic and Neotropics. Specimens were collected by means of mercury vapor light traps or flight interception traps.

A description, a habitus photograph and illustrations of the diagnostic characters of Aloconota elongata Lee & Ahn, sp. nov. are provided. Diagnostic characters of Aloconota Thomson are presented. Systematic position of Aloconota and Paraloconota Thomson are briefly discussed.

Types and additional material of 13 genera of Lomechusini from the Palaearctic and Oriental regions are revised. In all, 28 species are (re-)described and/or illustrated, 17 of them new: Orphnebius (Deroleptus) triacuminatus spec. nov. (Thailand) of the O. draco group; O. (D.) gracilis spec. nov. (South India) and O. (D.) protuberatus spec. nov. (South India) of the O. niger group; O. (D.) pertortus spec. nov. (India: West Bengal), O. (D.) migrus spec. nov. (India: Meghalaya), and O. (D.) reticulipennis spec. nov. (Indonesia: Java) of the O. siwalikensis group; Pheidologitonetes bursata spec. nov. (South India); Amaurodera bicarinata spec. nov. (India: Meghalaya); A. gilvicornis spec. nov. (Thailand); A. latisulcata spec. nov. (Indonesia: Java); A. brevipes spec. nov. (Indonesia: Sumatra); A. migritheca spec. nov. (Indonesia: Sumatra); A. longisetosa spec. nov. (Malaysia: Sabah); A. calicitheca spec. nov. (Malaysia: Sabah); Drusilla lativentris spec. nov. (China: Yunnan); Rabdotodrusilla vara spec. nov. (India: Meghalaya); Witteia tensa spec. nov. (China: Yunnan). The following new combination and synonymy are established: Pheidologitonetes adesi (Pace, 1998), comb. nov. (ex Zyrastilbus); Drusilla obliqua (Bernhauer, 1916) = D. palata Assing, 2015, syn. nov. Zyrastilbus angkorensis Pace, 2004 is not congeneric with the type species of Zyrastilbus Cameron, 1939; its correct generic assignment (Drusilla?) is currently unknown. An updated catalogue of the 174 described representatives of Orphnebius Motschulsky, 1858 in the East Palaearctic and Oriental regions is provided; the species are grouped according to a recently proposed intrageneric system. Amaurodera Fauvel, 1905 currently includes 53 described species distributed in the southern East Palaearctic and the Oriental regions. Additional records of 46 named and three unnamed species are reported, among them several new country records. The distributions of two Himalayan Orphnebius species are mapped. Nomenclatural Acts Orphnebius (Deroleptus) triacuminatus spec. nov. – urn:lsid:zoobank.org:act:A8C586C1-2037-4DE5-997C-7B5DFD7F8581 O. (D.) gracilis spec. nov. – urn:lsid:zoobank.org:act:F52577E3-1AD2-4C33-80E9-1C129D969EFB O. (D.) protuberatus spec. nov. – urn:lsid:zoobank.org:act:06A78E32-C968-43A9-97E1-7682FE870CB6 O. (D.) pertortus spec. nov. – urn:lsid:zoobank.org:act:D6784D78-D101-4BF6-B59F-78D0097BF255 O. (D.) migrus spec. nov. – urn:lsid:zoobank.org:act:550FAFD7-3EA5-40E2-9E95-9203CB6C7505 O. (D.) reticulipennis spec. nov. – urn:lsid:zoobank.org:act:A4F9C29A-34F2-4B67-AD44-3CB3593B3D89 Pheidologitonetes bursata spec. nov. – urn:lsid:zoobank.org:act:77C109C7-DED4-4297-95B4-519B7E085212 Amaurodera bicarinata spec. nov. – urn:lsid:zoobank.org:act:6504024F-CF61-4071-A1BA-E11A73AE16B0 A. gilvicornis spec. nov. – urn:lsid:zoobank.org:act:8AD61DB5-D227-4158-93B3-0F902BFF8C8F A. latisulcata spec. nov. – urn:lsid:zoobank.org:act:FA0BB6D1-AA68-4368-8640-CC5B576FB393 A. brevipes spec. nov. – urn:lsid:zoobank.org:act:9EEEC874-0C9A-4809-A8F5-B44EA72217BF A. migritheca spec. nov. – urn:lsid:zoobank.org:act:AAE44C1B-FD1A-49CF-B08B-C6F067F54F09 A. longisetosa spec. nov. – urn:lsid:zoobank.org:act:887533D9-985B-41FE-B3C8-F1FF8938DC8B A. calicitheca spec. nov. – urn:lsid:zoobank.org:act:774965EE-4326-45C1-B89E-303A3B4AC04F Drusilla lativentris spec. nov. – urn:lsid:zoobank.org:act:7CAC3239-9821-4DF6-BB7A-C8A564E9AF14 Rabdotodrusilla vara spec. nov. – urn:lsid:zoobank.org:act:EF92FF0F-0E13-4BCB-9D20-270262CA9D76 Witteia tensa spec. nov. – urn:lsid:zoobank.org:act:32B142EA-09BF-423E-8951-C710CE8AF383, Contributions to Entomology = Beiträge zur Entomologie, Bd. 67 Nr. 1 (2017)

The species of the nominal subgenus of the lomechusine genus Zyras Stephens, 1835 of the Himalaya, India, Sri Lanka, Thailand, and Sulawesi are revised. Additional species from other parts of the East Palaearctic and Oriental regions are addressed. In all, 40 species are described and/or illustrated, 14 of them for the first time: Zyras (Zyras) ambulans spec. nov. (Thailand), Z. (Z.) brevilobatus spec. nov. (Thailand), Z. (Z.) densihirtus spec. nov. (Sulawesi Utara), Z. (Z.) densissimus spec. nov. (Sulawesi Utara), Z. (Z.) latilobatus spec. nov. (South India), Z. (Z.) longilobatus spec. nov. (India: Meghalaya), Z. (Z.) luteipes spec. nov. (India: Meghalaya), Z. (Z.) morulus spec. nov. (Nepal: Dhaulagiri, Annapurna), Z. (Z.) nigrihirtus spec. nov. (Sulawesi Utara), Z. (Z.) parahirtus spec. nov. (Borneo), Z. (Z.) parvicollis spec. nov. (Thailand), Z. (Z.) russiceps spec. nov. (Thailand, Malaysia), Z. (Z.) titan spec. nov. (Sulawesi Utara), and Z. (Z.) truncatus spec. nov. (Nepal: Dhaulagiri). As many as 28 synonymies are proposed: Zyras alternans (Cameron, 1925) = Z. optimus Cameron, 1939, syn. nov.; Z. bartolozzii Pace, 2003 = Z. alboterminalis Pace, 2008, syn. nov.; Z. bettotanus Cameron, 1930 = Z. drescheri Cameron, 1939, syn. nov., = Z. atrapicalis Assing, 2016, syn. nov.; Z. brignolii (Pace, 1986) = Z. thainiger Pace, 2012, syn. nov.; Z. castaneus (Motschulsky, 1861) = Z. adulescens (Pace, 1987), syn. nov., = Z. britannorum Pace, 1992, syn. nov., = Z. fratrumkadooriorum Pace, 1998, syn. nov., = Z. chumphonensis Pace, 2004, syn. nov., = Z. dibrugarhensis Pace, 2011, syn. nov.; Z. preangeranus Cameron, 1939 = Z. louwerensi Cameron, 1939, syn. nov., = Z. chinkiangensis Bernhauer, 1939, syn. nov., = Z. setosipennis Scheerpeltz, 1965, syn. nov., = Z. alboantennatus Pace, 1986, syn. nov., = Z. sichuanorum Pace, 2012, syn. nov.; Z. geminus (Kraatz, 1859) = Z. indicus Cameron, 1944, syn. nov., = Z. shiva Pace, 1992, syn. nov., = Z. manjushri Pace, 1992, syn. nov., = Z. hongkongensis Pace, 1999, syn. nov., = Z. benenensis Pace, 2001, syn. nov., = Z. parageminus Pace, 2010, syn. nov., = Z. neoparageminus Hlaváč, Newton & Maruyama, 2011, syn. nov., = Z. subgeminus Pace, 2012, syn. nov., = Z. articollis Assing, 2016, syn. nov.; Z. parageminus Pace, 1998 = Z. nameriensis Pace, 2011, syn. nov.; Z. pindarae (Champion, 1921) = Z. ruficauda Cameron, 1939, syn. nov.; Z. proximus Cameron, 1939 = Z. drugmandi Pace, 2004; syn. nov. Zyras novinversus nom. nov. is proposed for the preoccupied name Z. inversus Pace, 2012, syn. nov. Lectotypes are designated for Zyras exasperatus Schubert, 1908, Z. drescheri Cameron, 1939, Z. gratellus Cameron, 1939, Myrmedonia perforata Champion, 1921, and Hygroptera castanea Motschulsky, 1861. Remarkable cases of colour polymorphism and of sexual dimorphism are discussed. A key to the Zyras sensu strictu species of the Himalaya, India, and Sri Lanka, a key to the species recorded from Thailand, and an updated catalogue of the Zyras sensu strictu species of the Palaearctic and Oriental regions are provided. Additional records of numerous named and several unnamed species are reported. The revised distributions of 37 species are mapped. The subgenus is currently represented in the Palaearctic and Oriental regions by a total of 124 described species. The countries with the greatest diversity are China (46 named species), Malaysia (20), India (20), Indonesia (18), Thailand (13), and Nepal (12). The subgenus is reported from Sulawesi for the first time (five named and two unnamed species). Based on a revision of type material, eleven species are not included in, or excluded from, Zyras sensu strictu, and Zyras unicolor Cameron, 1939 is tentatively moved to Drusilla Leach, 1819. Nomenclatural Acts Zyras (Zyras) ambulans spec. nov. – urn:lsid:zoobank.org:pub:FD33C1AE-F7D9-4E3A-A053-A2CAA7261CFE Z. (Z.) brevilobatus spec. nov. – urn:lsid:zoobank.org:act:6C6FB4E9-8A7B-40FB-B1C9-938C01CCD505 Z. (Z.) densihirtus spec. nov. – urn:lsid:zoobank.org:act:E47C7587-9B06-4CD1-821D-6074284CA5BB Z. (Z.) densissimus spec. nov. – urn:lsid:zoobank.org:act:C82B20D3-1259-446E-B077-0D026B057901 Z. (Z.) latilobatus spec. nov. – urn:lsid:zoobank.org:act:AD282BC4-9922-4004-97DE-0E84F5B8634F Z. (Z.) longilobatus spec. nov. – urn:lsid:zoobank.org:act:97F2CE8E-586F-458D-8B4C-26238AA1D870 Z. (Z.) luteipes spec. nov. – urn:lsid:zoobank.org:act:1E837A27-748A-4E5A-BBBC-ABC78704B40D Z. (Z.) morulus spec. nov. – urn:lsid:zoobank.org:act:6F52A4A8-EA4C-472C-AEA3-C3BF6A2C1795 Z. (Z.) nigrihirtus spec. nov. – urn:lsid:zoobank.org:act:4BCA38DF-D00B-4833-81D4-05557C34488E Z. (Z.) parahirtus spec. nov. – urn:lsid:zoobank.org:act:AF0B4E37-02D6-4618-A7C4-3D21FD8A5063 Z. (Z.) parvicollis spec. nov. – urn:lsid:zoobank.org:act:317676A6-1E6A-495F-9864-B7DFA85717F4 Z. (Z.) russiceps spec. nov. – urn:lsid:zoobank.org:act:0F8B55FE-9FAD-4393-8C10-94FBC35FCD77 Z. (Z.) titan spec. nov. – urn:lsid:zoobank.org:act:04E2A49E-E856-490E-AAB3-333A8F481D98 Z. (Z.) truncatus spec. nov. – urn:lsid:zoobank.org:act:D18CCF00-B59C-4826-9750-E0991FFD871E Z. (Z.) novinversus nom. nov. – urn:lsid:zoobank.org:act:3BD2568F-509A-4132-9F55-131D59FE9405, Contributions to Entomology = Beiträge zur Entomologie, Bd. 67 Nr. 1 (2017)

A taxonomic review of the subgenus Datomicra Mulsant & Rey of the genus Atheta Thomson in Korea is presented. A new synonym is proposed: Datomicra Mulsant & Rey, 1874 = Datostiba Sawada, 1976, syn. nov. The subgenus is represented in Korea by eight species including a new species, Atheta (Datomicra) semidentiventris Lee & Ahn, sp. nov. Two species [A. (D.) dadopora Thomson and A. (D.) dentiventris Bernhauer] are new to the Korean Peninsula and one [A. (D.) celata (Erichson)] to South Korea. A key, descriptions, habitus photographs and illustrations of the diagnostic characters of the new species and two newly recorded species are provided.

Two genera, Apimela Mulsant & Rey and Gyronycha Casey (both Aleocharinae: Oxypodini: Meoticina), are recorded from New Brunswick and Canada for the first time. The following species are newly recorded or described as new in New Brunswick and Canada: Apimela fusciceps (Casey); A. canadensis Klimaszewski & Webster, sp. n.; and Gyronycha pseudoobscura Klimaszewski & Webster, sp. n. The genera are defined and the key for species identification is provided. Color habitus images and black and white images of the median lobe of the aedeagus, spermatheca, tergite, and sternite VIII are provided for all species occurring in Canada, and Apimela macella (Erichson), the type species of genus Apimela, and G. valens Casey, the type species of Gyronycha. New or additional habitat data are provided for the species treated in this contribution. The following new synonym is established: Gyronycha lepida Casey, 1911 (NC), is a synonym of G. fusciceps Casey, 1894 (NC).

Recent adaptive radiations provide striking examples of convergence [1-4], but the predictability of evolution over much deeper timescales is controversial, with a scarcity of ancient clades exhibiting repetitive patterns of phenotypic evolution [5, 6]. Army ants are ecologically dominant arthropod predators of the world's tropics, with large nomadic colonies housing diverse communities of socially parasitic myrmecophiles [7]. Remarkable among these are many species of rove beetle (Staphylinidae) that exhibit ant-mimicking "myrmecoid" body forms and are behaviorally accepted into their aggressive hosts' societies: emigrating with colonies and inhabiting temporary nest bivouacs, grooming and feeding with workers, but also consuming the brood [8-11]. Here, we demonstrate that myrmecoid rove beetles are strongly polyphyletic, with this adaptive morphological and behavioral syndrome having evolved at least 12 times during the evolution of a single staphylinid subfamily, Aleocharinae. Each independent myrmecoid clade is restricted to one zoogeographic region and highly host specific on a single army ant genus. Dating estimates reveal that myrmecoid clades are separated by substantial phylogenetic distances-as much as 105 million years. All such groups arose in parallel during the Cenozoic, when army ants diversified into modern genera [12] and rose to ecological dominance [13, 14]. This work uncovers a rare example of an ancient system of complex morphological and behavioral convergence, with replicate beetle lineages following a predictable phenotypic trajectory during their parasitic adaptation to host colonies.

Two genera, Apimela Mulsant & Rey and Gyronycha Casey (both Aleocharinae: Oxypodini: Meoticina), are recorded from New Brunswick and Canada for the first time. The following species are newly recorded or described as new in New Brunswick and Canada: Apimela fusciceps (Casey); A. canadensis Klimaszewski & Webster, sp. n.; and Gyronycha pseudoobscura Klimaszewski & Webster, sp. n. The genera are defined and the key for species identification is provided. Color habitus images and black and white images of the median lobe of the aedeagus, spermatheca, tergite, and sternite VIII are provided for all species occurring in Canada, and Apimela macella (Erichson), the type species of genus Apimela, and G. valens Casey, the type species of Gyronycha. New or additional habitat data are provided for the species treated in this contribution. The following new synonym is established: Gyronycha lepida Casey, 1911 (NC), is a synonym of G. fusciceps Casey, 1894 (NC).

Thecturota tenuissima Casey, is reported for the first time from Canada, based on records from Ontario and Quebec. It was originally described from Rhode Island, USA, and no other records of this species in North America were published since that time. The specimens from Canada were captured by car netting. We provide here a redescription of this species and never before published images of habitus, tergite, and sternite VIII of both sexes, median lobe of aedeagus and spermatheca. The features distinguishing T. tenuissima from T. capito Casey (=pusio (Casey)), the only other species reported in Canada, are provided and illustrated.

Three new species of the pygostenine genus Doryloxenus Wasmann, viz., Doryloxenus aenictophilus sp. n. (from Zhejiang), Doryloxenus tangliangi sp. n. (from Zhejiang), and Doryloxenus songzhigaoi sp. n. (from Yunnan), are described, illustrated and distinguished from the Asian congeners. An identification key to the Chinese species is given.

Members of the termitophilous subtribe Termitozyrina (Aleocharinae: Lomechusini) associated with Hodotermopsis sjostedti are taxonomically treated. The genera Hodotermophilus Naomi & Terayama and Termophidoholus Naomi & Hirono, and each type species (monotypic) are redescribed. Termophidoholus formosanus, originally described from Taiwan, and its host termite H. sjostedti are newly recorded from Laos. Yakuus iwatai Kanao & Maruyama gen. & sp. nov. and H. gloriosus were collected sympatrically in the same nests in Yaku-shima, Japan. All of the above species, belonging to the three genera, share the presence of a batch of spurs at the tibial apex of fore and mid legs. Habitus photographs and illustrations of diagnostic features are provided for these species, and their phylogenetic relationships are discussed based on morphological similarities and the extant distribution of the host termite species.

Three new species of the mycophagous aleocharine genus Gyrophaena Mannerheim are described in Korea. The types and paratypes of the new species are designated. Illustrations of the diagnostic characters and habitus photographs of new species are provided with a key to Korean species of Gyrophaena.

To assess the accuracy of species delimitation and phylogenetic relationships of the Aleochara fucicola species complex, we performed molecular phylogenetic analyses. Detailed micromorphological characters were also examined using scanning electron microscopy (SEM). The molecular data set included two mitochondrial (COI and COII) and three nuclear protein-coding genes (CAD, EF1-α and wg) for 19 populations of five species. Significant discordance was found between mitochondrial and nuclear gene trees. Two species, A. puetzi (Assing) and A. segregata Yamamoto and Maruyama, were not separated in the mitochondrial gene trees, but clearly were differentiated in the nuclear and concatenated gene trees. The SEM data also supported the separation of these two species, but an analysis of genetic divergence data did not. Adaptation to extremely harsh environments might reduce morphological variation in the A. fucicola species complex during the colonization of seashores. We present a multilocus phylogeny of the species complex. It suggests that the ancestor of the A. fucicola species complex occurred along the southern coasts of Northeast Asia, followed by dispersals to northern coasts.

Four homalotine species-Anomognathus armatus (Sharp), Heterota onorum Maruyama, Neosilusa ceylonica (Kraatz), and Silusa lanuginosa Sharp-and three genera-Anomognathus Solier, Neosilusa Cameron, Silusa Erichson-are identified for the first time in Korea. The tribe Homalotini can be distinguished from other related tribes by the combination of the following characters: tarsal formula 4-4-5; mandible with patch or rows of denticles in ventral molar region; base of medial setae of prementum very close together, setal insertions in contact in many, setae displaced one behind the other in some; medial pseudopore field of prementum very narrow in many. Habitus photographs, diagnoses, and illustrations of male genitalia of these four species are provided.

A new species of the aleocharine genus Agaricomorpha Ashe (Coleoptera: Staphylinidae: Aleocharinae), A. ashei sp. nov., in Korea is described. A key to the known species of Agaricomorpha is provided. We also present the habitus illustration with line drawings of the diagnostic characters. This represents the third known Agaricomorpha species and the first occurrence of the genus in the Palaearctic region.