Hydrosmecta Thomson 1858

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2024, Korean species of Hydrosmecta Thomson (Coleoptera: Staphylinidae: Aleocharinae) with descriptions of two new species, Zootaxa 5399 (3), pp. 265-274 : 266

Genus Hydrosmecta Thomson 1858

Hydrosmecta Thomson 1858: 33 (Type species: Homalota longula Heer, 1839 ).

Hydrosmectina Ganglbauer 1895: 145 (Type species: Homalota subtilissima Kraatz, 1854 ).

Thinoecia Mulsant & Rey 1873: 184 (Type species: Thinoecia libitina Mulsant & Rey, 1873 ).

Diagnosis. Members of the genus Hydrosmecta can be distinguished from other athetine genera by the combination of the following characters: body very small and slender, parallel-sided and flattened dorso-ventrally; head about as large as or larger than pronotum; eye shorter than temple; antenna long and slender, reaching about the middle of elytra; antennomere 3 shorter than 2; mandible long and slender, right one with distinct internal tooth; prementum without pseudopore or with a few pseudopores in median region; elytron relatively long, distinctly longer than pronotum; abdominal tergites II–III without anterior macroseta, tergite VII distinctly longer than VI ( Benick & Lohse 1974; Yosii & Sawada 1976; Ashe 2001).

Distribution. Worldwide (except Australia).

Remarks. All examined specimens of South Korean species were collected near streams and rivers.