A new species of the genus Naddia Fauvel, 1867 (Coleoptera: Staphylinidae: Staphylininae) from southern China.

This study describes a new rove beetle species, Naddia flavipes sp. nov. from southern China and provides additional morphological knowledge on Naddia hainanensis Yang & Zhou 2010. Line drawings and color illustrations of adult structures and genitalia are provided for both species.

A Taxonomic Study on the Genus Naddia from China (Coleoptera, Staphylinidae, Staphylininae) with Descriptions of Two New Species.

Two new species of Naddia from China are described: N. chenchangchini sp. nov. (Guangxi) and N. hujiayaoi sp. nov. (Zhejiang, Fujian, Jiangxi, Hunan, Guangxi, Guangdong). Naddia atripes Bernhauer, 1939 is new to Vietnam and the following Chinese provinces: Jiangxi, Guangxi, Jiangsu, Shaanxi, Hunan, Hubei, Sichuan, Guizhou, Fujian and Guangdong. Naddia chinensis Bernhauer, 1929 is new to Zhejiang, Jiangsu, Guizhou, Henan, Hunan, Shaanxi, Fujian, Chongqing, Guangxi and Hubei. Naddia miniata Fauvel, 1895 is new to Laos. A key to Chinese species of the genus is provided.

Review of Chinese species of the genus Thoracostrongylus Bernhauer, 1915 (Coleoptera, Staphylinidae, Staphylininae).

Species of the genus Thoracostrongylus Bernhauer, 1915 occurring in China are reviewed. Four new species and one new subspecies are described: T.baishanzuensis sp. nov. (Zhejiang), T.bicolor sp. nov. (Guangdong, Guangxi, Hunan, Yunnan), T.brachypterus sp. nov. (Sichuan), T.chrysites sp. nov. (Fujian), and T.formosanusflavipes ssp. nov. (Zhejiang, Fujian, Hubei, Hunan, Sichuan, Guangxi, Guangdong, Anhui, Jiangxi). A new synonymy is proposed: T.baoxingensis Yang, Zhou & Schillhammer, 2011 syn. nov. is in fact T.acerosus Yang, Zhou & Schillhammer, 2011. New provincial records for T.acerosus Yang, Zhou & Schillhammer, 2011 are reported. A key to Chinese species of the genus is provided.

A new species of the genus Eucibdelus Kraatz, 1859 (Coleoptera: Staphylinidae: Staphylininae) from Yunnan, China.

Eucibdelus flavipennis sp. nov. from Yunnan Province, China is described. Line drawings and color illustrations of adult structures and genitalia of the new species are given. The former subgeneric division is shortly discussed.

Notes on the genus Rhyncocheilus in China (Coleoptera, Staphylinidae, Staphylininae) with descriptions of three new species.

Three new species of Rhyncocheilus from China are described: R. huanghaoi sp. n. (Xizang), R. gonggashanus sp. n. (Sichuan) and R. yangxiaodongi sp. n. (Yunnan). The characters of R. griseosericans (Fairmaire, 1894) are clarified. Rhyncocheilus rugulipennis Cameron, 1932 is new to China, and R. henanensis Schillhammer, 2012 is new to Hubei. A key to the Chinese species of the genus is provided.

A review of the genus Hesperosoma Scheerpeltz (Coleoptera, Staphylinidae, Staphylininae) of China.

A review of 16 species of Hesperosoma Scheerpeltz from China is presented. Five new species are described: H.(s.str.)chenchangchinisp. nov. from Yunnan, H.(s.str.)languidumsp. nov. from Yunnan, H.(s.str.)motuoensesp. nov. from Xizang, H. (Paramichrotus) parvioculatumsp. nov. from Hubei, Hunan and H.(s.str.)xizangensesp. nov. from Xizang. Two species are new to China: H. (Paramichrotus) brunkei Schillhammer, 2015 from Yunnan and H.(s.str.)kleebergi Schillhammer, 2009 from Xizang. Females of H. (Paramichrotus) alexpuchneri Schillhammer, 2009, H. (Paramichrotus) guizhouense Schillhammer, 2018 and H.(s.str.)flavoterminale Schillhammer, 2004 are described for the first time. Habitus and diagnostic characters of all species are photographed and a key to Chinese species of Hesperosoma is provided.

A review of Barypalpus Cameron, 1932 (Coleoptera: Staphylinidae) with descriptions of three new species.

The genus Barypalpus Cameron, 1932 is reviewed and diagnosed. Three new species are described: B. chinensis sp. n. (China), B. holzschuhi sp. n. (Laos), B. shibatai sp. n. (Laos). The habitus, body details and the aedeagi of all species are illustrated. A key to species is provided.

Hesperus rougemonti sp. n. (Coleoptera, Staphylinidae) from Borneo.

The genus Hesperus Fauvel is, in its current concept, an obviously polyphyletic assemblage. One of the species groups that stand out, due to a combination of characters unusual for Hesperus, is the borneensis group. These characters are the subserrate antennae and the paramere bearing numerous peg setae. Otherwise, the members of this group look as typical for a Hesperus as it can be. At present, the group comprises the following species: H. birmanus Cameron, 1932, H. borneensis Bernhauer, 1915, H. javanus Cameron, 1937, H. malayanus Cameron, 1932a, H. susannekontrusae Schillhammer, 2005, H. temburong Schillhammer, 2002, H. watanabei Shibata, 2002, and H. wemmeri Schillhammer, 2002.

Early evolution of the hyperdiverse rove beetle tribe Staphylinini (Coleoptera: Staphylinidae: Staphylininae) and a revision of its higher classification.

The rove beetle tribe Staphylinini (Staphylinidae: Staphylininae) is a monophyletic lineage of over 5500 relatively large and charismatic species, yet its higher classification remains deeply rooted in historical concepts. Despite recent progress toward inferring phylogenetic relationships within this group using morphological and molecular datasets, relationships among taxa that were united under a polyphyletic "Quediina" remain largely unknown. To infer these relationships, we analysed a six-gene dataset (4370 bp) using parsimony and model-based analyses and the results were placed in the context of morphology. While all genes contributed synapomorphies for major lineages or relationships between them, carbamoyl synthetase (CAD), topoisomerase I (TP) and wingless (Wg) were the most informative. TP was generally most informative at the level of subtribe, Wg above this level and CAD throughout the tree. The monophyly of Staphylinini was strongly supported and analyses support seven clades that correspond to higher taxonomic levels, four of which are formally described as subtribes here: Acylophorina stat. rev., Cyrtoquediina new subtribe, Erichsoniina new subtribe and Indoquediina new subtribe. The majority of Staphylinini taxa were recovered within a well-supported "northern hemisphere clade" that is weakly represented in the southern hemisphere. The composition and morphological diagnosis of the "Staphylinini propria" clade are revised, and the pronotum shape historically associated with this group is shown to have evolved multiple times elsewhere in Staphylinini. The genus Stevensia is moved from Staphylinina to Acylophorina based on morphological evidence. Cyrtoquedius stat. nov., previously a subgenus of Quedius, is raised to the genus level. The following 32 new combinations (from Quedius) are proposed: Cyrtoquedius anthracinus (Solsky); C. arrogans (Sharp); C. basiventris (Sharp); C. bolivianus (Sharp); C. bruchi (Bernhauer); C. clypealis (Sharp); C. concolor (Sharp); C. flavicaudus (Sharp); C. flavinasis (Bernhauer); C. frenatus (Erichson); C. graciliventris (Sharp); C. jacobi (Scheerpeltz); C. jocosus (Sharp); C. labiatus (Erichson); C. laeviventris (Bernhauer); C. mexicanus (Sharp); C. ochropygus (Bernhauer); C. ogloblini (Bernhauer); C. ornatocollis (Bierig); C. protensus (Sharp); C. rufinasus (Sharp); C. verecundus (Sharp); C. verres (Smetana); Indoquedius borneensis (Cameron); I. dispersepunctatus (Scheerpeltz); I. javanus (Cameron); I. malaisei (Scheerpeltz); I. micantiventris (Scheerpeltz); I. parallelicollis (Scheerpeltz); I. philippinus (Cameron); I. recticollis (Scheerpeltz); and I. sanguinipennis (Scheerpeltz). Cyrtoquedius verres is recorded from the state of Georgia (USA) for the first time, which, together with its transfer from Quedius, extends the distribution of the Cyrtoquediina significantly northward into the Nearctic.

Two new species and additional data of Gabrius Stephens (Coleoptera, Staphylinidae) from the Korean Peninsula.

Two new species of Gabrius Stephens from the Korean Peninsula are described: Gabrius koreanus (S-Korea) and G. makranczyi (N- and S-Korea). Gabrius ponghwaricus Pasnik, 2000 is synonymized with G. ancoripenis Cho & Lee, 1997. New records: Gabrius mandschuricus Bernhauer, 1914 (S-Korea), G. philomimus Schillhammer, 2000 (Korean Peninsula).