Sinotrisus vietnamensis
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Ordo: Coleoptera
Familia: Staphylinidae
Genus: Sinotrisus
Name
Sinotrisus vietnamensis Yin & Nomura sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype, male, labeled ‘Mt. Phang Si Pang (moss: / 2,000 m). Lai Chau Prov. / [N. VIETNAM] / 17.v.2003, S. Nomura leg. // HOLOTYPE [red] / Sinotrisus vietnamensis sp. n. / Yin and Nomura / det. 2012, NSMT’.
Diagnosis
Vertex modified in male. Antennomeres VII greatly transverse. Pronotum lacking spines along discal ridges; basolateral foveae small. Mesotibiae with apical spur about as long as first tarsomeres.
Description
Male (Fig. 4B). Length 3.00. Head (Fig. 6A) distinctly wider than long, HL 0.57, HW 0.71; frons convex medially, extending posteriorly to anterior margin of vertexal cavity; shallow transverse cavity with large foveae, area posterior to cavity strongly raised medially to form rostrum, densely covered with setae; with distinct occipital carinae; postocular margins evenly narrowed toward head base; antennomeres IV (Fig. 6B) about same length as VI, clubs formed by apical three antennomeres, IX strongly transverse, X slightly longer than IX, XI nearly oval, narrowed toward apex in apical half. Pronotum about as long as wide, PL 0.63, PW 0.65; median longitudinal sulcus slightly widened posteriorly to form shallow oval antebasal impression, lacking median antebasal fovea; paranotal carinae extending through length of prosternum. Elytra slightly wider than long, EL 0.92, EW 1.13; barely angulate at humeri. Mesotrochanters (Fig. 6C) with long basoventral spine; mesotibiae with apical spur (Fig. 5D) about same length of first tarsomeres; metatrochanters (Fig. 6E) broadly expanded ventrally, with small blunt tubercle at ventral margin. Abdomen slightly wider than long, AL 0.88, AW 1.10; segments lacking basal ridges. Aedeagus (Figs 6F–I) well-sclerotized, length 0.39.
Female. Unknown.
Distribution
Vietnam: Lai Chau.
Habitat
The individual was collected from a pile of moist moss.
Etymology
Named after the country where the type locality lies.
Original Description
- Yin, Z; Nomura, S; Li, L; 2012: A taxonomic revision of the genus Sinotrisus Yin & Li (Coleoptera, Staphylinidae, Pselaphinae) ZooKeys, 205: 45-57. doi
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