Abstract
A new genus of the paederine subtribe Scopaeina Mulsant & Rey, 1878 (Staphylinidae: Paederinae: Lathrobiini), Frischianus Herman, gen. nov., is described from the Oriental Zoogeographical Region with F. rufulus (Kraatz, 1859) as the type species. Frischianus is distinguished from the other genera of the Scopaeina according to an epigenal ridge and dorsally contiguous groove connecting the trichobothrium to the antennal hump, bump-like metakatepisternal processes, and a unipartite gonocoxal plate of females.
The following names are transferred from Scopaeus as new combinations: Frischianus coriaceus (Cameron, 1932), F. laticollis (Cameron, 1925), F. miscellus (Cameron, 1932), and F. rufulus (Kraatz, 1859). Lectotypes are designated for Lithocharis rufulus Kraatz, 1859, Medon coriaceus Cameron, 1932, M. miscellus Cameron, 1932, and Scopaeus laticollis Cameron, 1925.
Thirty new species of Frischianus are described: F. barclayi Frisch, sp. nov. (Malay Peninsula), F. brenneri Frisch, sp. nov. (Borneo), F. burckhardti Frisch, sp. nov. (Borneo), F. communis Frisch, sp. nov. (Bali, Borneo, Java, Malay Peninsula), F. crassiphallatus Frisch, sp. nov. (Thailand), F. curtipennis Frisch, sp. nov. (Sumatra), F. echinatospinatus Frisch, sp. nov. (Borneo), F. hamatus Frisch, sp. nov. (Sumatra), F. huijbregtsi Frisch, sp. nov. (Sulawesi), F. karneri Frisch, sp. nov. (Malay Peninsula), F. keralensis Frisch, sp. nov. (India), F. latilobatoides Frisch, sp. nov. (Malay Peninsula), F. latilobatus Frisch, sp. nov. (Borneo), F. lineatocollis Frisch, sp. nov. (India), F. lineolatus Frisch, sp. nov. (India), F. loebli Frisch, sp. nov. (Sumatra), F. mariae Frisch, sp. nov. (Malay Peninsula), F. parentium Frisch, sp. nov. (India), F. pedator Frisch, sp. nov. (Sumatra), F. puthzi Frisch, sp. nov. (Borneo), F. rubiginicollis Frisch, sp. nov. (Malay Peninsula), F. schuriani Frisch, sp. nov. (Malay Peninsula), F. serratispinatus Frisch, sp. nov. (Borneo), F. setifer Frisch, sp. nov. (Java), F. similis Frisch, sp. nov. (Java), F. strigaticollis Frisch, sp. nov. (India), F. subalpinus Frisch, sp. nov. (Sumatra), F. telnovi Frisch, sp. nov. (Borneo), F. tridens Frisch, sp. nov. (Malay Peninsula), F. uhligi Frisch, sp. nov. (Borneo).
Frischianus is considered a monophyletic group mainly according to the unipartite female gonocoxal plate. The phylogenetic relationships of Frischianus within the Scopaeina and its infrageneric phylogeny are discussed. According to putative apomorphic characters, Frischianus is subdivided into the F. strigaticollis species group from South India and the speciose, Southeast Asian F. laticollis species group. Within the F. laticollis subgroup, subordinate phylogenetic lineages are distinguished.
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