Diversity of pselaphine beetles (Coleoptera: Staphylinidae: Pselaphinae) in eastern Thailand

Pselaphine beetles (Coleoptera: Staphylinidae: Pselaphinae) are cosmopolitan, species‐rich, and yet poorly studied, particularly in the tropics. We sampled beetles in three types of primary forest and two types of disturbed forest habitats in eastern Thailand to assess the utility of pselaphine beetles as bioindicators of forest disturbance. We simultaneously measured leaf litter mass, soil moisture, soil acidity and canopy cover at each site to infer which environmental factors affect pselaphine beetle diversity and abundance. At each site, pselaphine beetles were extracted from ten 1 m² samples of leaf litter and soil with Tullgren funnels. We sampled 1867 adult beetles representing six supertribes, 51 genera and 114 morphospecies; 7% of the genera and 92% of the species were undescribed. Forest types differed significantly in species richness, abundance, diversity and evenness. Primary forest had greater numbers of species and individuals, and higher diversity indices (H′). Teak plantation and secondary forest had substantially fewer individuals and species of pselaphine beetles. Species composition differed between primary and degraded forests. Canopy cover, soil moisture, and leaf litter mass positively correlated with beetle species richness and abundance. Leaf litter mass and soil moisture were the two most important factors affecting the diversity of pselaphine beetle assemblages. Among the 114 morphospecies collected, 43 morphospecies were specific to two or three habitats and 64 morphospecies were found only in a single habitat. Thus pselaphine beetles appear to have rather narrow habitat requirements and their presence/absence was correlated with environmental differences. These traits make pselaphine beetles a suitable bioindicator taxon for assessing forest litter diversity and monitoring habitat change.     

Description of a new species of the genus Tribasodites Jeannel (Coleoptera, Staphylinidae, Pselaphinae) from East China with a key to world species

A remarkable new species of the genus Tribasodites, 1960, Tribasodites spinacaritussp. n. is described and illustrated from Zhejiang Province, East China. A key to world species of the genus is provided. Systematic position of the new taxon is discussed.     

Morphogenia: a new genus of the Neotropical tribe Jubini (Coleoptera,Staphylinidae, Pselaphinae) from the Brazilian Amazon

A new genus and species of the large Neotropical pselaphine tribe Jubini is described from Manaus, Brazil, based on material preserved in the Natural History Museum, London. Morphogenia struhligen. et sp. n. represents the possible sister taxon of the abundant and speciose genus Barrojuba Park, sharing with it the putatively derived condition of anterolaterally shifted vertexal foveae, producing a smoothly convex vertex devoid of fovea or sulci. However, unlike Barrojuba, Morphogenia retains a plesiomorphic antebasal sulcus on the pronotum in both sexes, and additionally lacks elaborate abdominal fovea-like pockets and teeth on the lateral margins of the pronotum that are typical of Barrojuba. The genus is also unusual among jubine genera in lacking the characteristic V- or Y-shaped gular carina. In contrast to the commonly-collected Barrojuba, specimens of Morphogenia are absent in extensive jubine collections housed in museums in the United States, indicating that the new taxon may be relatively scarce or localised.     

On the Chinese species of the genus Intestinarius Kurbatov (Coleoptera, Staphylinidae, Pselaphinae)

A total of three Chinese species of the genus Intestinarius Kurbatov, 2007 are recognized, among which, two new species are described: Intestinarius guangdongensissp. n. from Guangdongand Intestinarius longicepssp. n. from Guizhou. Illustrations of major diagnostic characters are given for all three Chinese species including Intestinarius kuzmini Kurbatov, 2007. A key is included to aid in their identification.     

Dayao gen. n. of the subtribe Tyrina (Coleoptera, Staphylinidae, Pselaphinae) from South China

Dayao pengzhongigen. et sp. n. is described and illustrated based on the material collected in Guangxi Province, South China. The genus is placed in the oriental 'Pselaphodescomplex' of genera of the subtribe Tyrina and its taxonomic placement is discussed.     

Discovery of the tribe Odontalgini (Coleoptera: Staphylinidae; Pselaphinae) in Japan

A new species of the pselaphine genus Odontalgus is described from Honshu, Japan, under the name of Odontalgus masaoi. Odontalgus coreanus Löbl known from North Korea is recorded for the first time from Kyushu, Japan. These are the first formal records of the tribe Odontalgini from Japan.     

Pseudoexeirarthra,a new genus from New Zealand (Coleoptera,Staphylinidae, Pselaphinae), with descriptions of seven new species

A new endemic genus and seven new species of New Zealand pselaphine staphylinid beetles of the supertribe Faronitae are described as follows: Pseudoexeirarthra Park & Carlton, gen. n. (type species: Sagola spinifer Broun); Pseudoexeirarthra sungmini Park & Carlton, sp. n.; Pseudoexeirarthra kwangguki Park & Carlton, sp. n.; Pseudoexeirarthra youngboki Park & Carlton, sp. n.; Pseudoexeirarthra seiwoongi Park & Carlton, sp. n.; Pseudoexeirarthra parkeri Park & Carlton, sp. n.; Pseudoexeirarthra hlavaci Park & Carlton, sp. n.; Pseudoexeirarthra nomurai Park & Carlton, sp. n. Three species, Sagola spinifer Broun, Sagola colorata Broun, and Sagola puncticollis Broun, are transferred to the genus Pseudoexeirarthra. Six species are synonymized: Sagola dilucida Broun, Sagola guinnessi Broun, Sagola longicollis Broun, Sagola longula Broun, and Sagola rectipennis Broun under Pseudoexeirarthra spinifer (Broun); Sagola insueta Broun under Sagola colorata (Broun). A lectotype is designated for Pseudoexeirarthra spinifer (Broun). A key, habitus photographs, line drawings of diagnostic characters, and distribution maps are provided for each species.     

A New Species of the Genus Colilodion Besuchet (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam

A new pselaphine species, Colilodion thienmu n. sp., is described from Mt. Bach Ma in Central Vietnam. SEM photographs of this species are provided and morphological notes are given in this study.     

New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada: Pselaphinae

Twenty species of Pselaphinae are newly recorded from New Brunswick, Canada. This brings the total number of species known from the province to 36. Thirteen of these species are newly recorded for the Maritime provinces of Canada. Dalmosella tenuis Casey and Brachygluta luniger (LeConte) are newly recorded for Canada. Collection and habitat data are presented for these species.     

The species of the genus Micrambe Thomson 1863, from South Africa (Coleoptera: Cryptophagidae)

The 22 species of the genus Micrambe Thomson known from South Africa are analyzed and revised. Micrambe danielssoni sp. nov is described. Following a detailed study of the type material in different entomological collections, the status of two taxa is revised and two new synonymies are proposed: Micrambe kolbei Grouvelle 1908, syn. nov. for Micrambe minuta Grouvelle 1908, and Micrambe similis Bruce 1957, syn. nov. for Micrambe peringueyi Grouvelle 1908. A lectotypus is designated for one taxon: Micrambe capensis (Redtenbacher 1867). A key to all the species occurring in South Africa is presented.     

Two pselaphine species (Coleoptera: Staphylinidae) new to Korea

Two pselaphine staphylinid species –Stipesa rudis Sharp and Tainochus nitidus Nomura – are identified for the first time in the Korean peninsula.     

Two new species and new record of Batricavus Yin & Li (Coleoptera, Staphylinidae, Pselaphinae) from China

Two new species, Batricavus abdominalis Yin & Li, sp. n. and Batricavus hainanensis Yin & Li, sp. n. are described from Hainan, South China, with male habitus and major diagnostic features illustrated. Batricavus tibialis Yin & Li is newly recorded from Zhejiang, East China. Keys to both sexes of the genus are included.     

Description of a new species of Trogoderma Dejean, 1821 from Norfolk Island (Coleoptera: Dermestidae: Megatominae)

Trogoderma norfolkiana sp. nov. from Norfolk Island is described, illustrated and compared with related species; a differential diagnosis is also provided.

http://zoobank.org/urn:lsid:zoobank.org:pub:519C91E0-774C-4AA2-9870-2F6C24B32B7C     

A taxonomic revision of the New World genus Oropodes Casey (Coleoptera, Staphylinidae, Pselaphinae)

The genus Oropodes is characterized and revised with 18 species being treated. Members of this genus are found in temperate forests to desert brush lands from Oregon to Baja California, but are associated primarily with dry forests and shrub lands of California. Keys to males and females, where known, are provided. Seven species are redescribed: Oropodes arcaps (California), Oropodes dybasi (Oregon), Oropodes ishii (California), Oropodes nuclere (California), Oropodes orbiceps (California), Oropodes rumseyensis (California), Oropodes yollabolly (California). The name Oropodes raffrayi (California) is raised from synonymy and the species is redescribed, NEW STATUS. Ten new species are described: Oropodes aalbui (California), Oropodes bellorum (California), Oropodes casson (California), Oropodes chumash (California), Oropodes esselen (California), Oropodes hardyi (California), Oropodes serrano (California), Oropodes tataviam (California), Oropodes tongva (California), and Oropodes tipai (Baja California, Mexico), NEW SPECIES. These species are placed into three species groups: the arcaps-group, the orbiceps-group, and the raffrayi-group. Data for a new record of Euplecterga fideli are given, and a list of the unassociated Oropodes females with distinctive genitalia is included with their label data.     

Olemehlia krali,a new genus and species of Ripidiinae from Baltic amber (Coleoptera: Ripiphoridae)

A new genus and species, Olemehlia krali n. g. & n. sp. (Coleoptera: Ripiphoridae: Ripidiinae), is described from Baltic amber. The newly described genus is compared with all known fossil and extant closely related genera of the subfamily Ripidiinae. It is characterised by the following combination of characters: antennae consisting of 10 antennomeres, with scape, pedicel, and antennomere 3 simple and antennomeres 4–10 uniflabellate, mouthparts reduced to a small single unpaired tubercle, postocular ommatidia absent, pronotum trapezoid without grooves or impressions, elytra without white apical spots, tarsal formula 5–5–4, hind tarsomere I shorter than three remaining combined. Diversity of Ripiphoridae in Baltic amber is discussed; key to Ripidiinae genera from Baltic amber is provided.     

A new genus of Cyrtoscydmini (Coleoptera: Staphylinidae: Scydmaeninae) from Japan

Rutaraphes shikokuensis gen. et sp. nov. is described from Shikoku, Japan. The new taxon belongs to a group of genera characterized by the lateral sutures demarcating the submentum and is most similar to Neuraphes and Scydmoraphes. Morphological structures of Rutaraphes are illustrated and possible affinities with other genera of Cyrtoscydmini are discussed. Keys to identification of Palearctic and Japanese genera of Cyrtoscydmini are given. Including Rutaraphes, 14 genera of Scydmaeninae are currently known to occur in Japan.     

A new species of the genus Micropeplus Latreille(Coleoptera: Staphylinidae: Micropeplinae) from China

A new species of the genus Micropeplus Latreille is described under the name of M. songi sp. nov. Color photos of habitus, head, pronotum, elytra, wing, metasternum, the 3rd to 7th tergites of abdomen, the 8th sternite, and aedeagus are provided. This species was found on fungi from Mt. Wahui in Jiulong County, Sichuan, China.     

Revision and phylogenetic assessment of the rove beetle genus Pseudohesperus Hayashi,with broad reference to the subtribe Philonthina (Coleoptera: Staphylinidae: Staphylinini)

This paper studies the phylogeny of the rove beetle subtribe Philonthina, to test its hypothetical monophyly and to unravel the evolutionary relationships of the subtribe and its included genus‐level taxa, with emphasis on the genus Pseudohesperus and its close‐allied relatives. The phylogenetic analyses are based on 105 adult morphological characters and 66 terminal taxa, i.e., all six members of Pseudohesperus, 51 species to represent 29 other genera of the subtribe Philonthina, seven species to represent the other six subtribes of Staphylinini, one species of the tribes Arrowinini, and one of the Platyprosopini. According to the phylogenetic results obtained, the genus Erichsonius should move out from the hitherto‐defined subtribe Philonthina and thus the monophyly of this taxon is challenged. The phylogenetic tree suggests that the genera Hesperus and Belonuchus might not be monophyletic, but the monophyly of Pseudohesperus and the sister relationship between it and Bisnius are well supported. The species‐level phylogenetic relationships of the genus Pseudohesperus reveal a clear pattern of species diversification that can be correlated well with the species' zoogeographical patterns. The paper also revises the taxonomy of Pseudohesperus and describes five new species from China: Pseudohesperus luteus Li & Zhou sp. nov. , Pseudohesperus pedatiformis Li & Zhou sp. nov. , Pseudohesperus tripartitus Li & Zhou sp. nov. , Pseudohesperus sparsipunctatus Li & Zhou sp. nov. , and Bisnius lubricus Li & Zhou sp. nov. An identification key to the species of Pseudohesperus is provided and their geographical distributions are mapped. © 2011 The Linnean Society of London, Zoological Journal of the Linnean Society, 2011, 163 , 679–722.