Sinotrisus sinensis
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Ordo: Coleoptera
Familia: Staphylinidae
Genus: Sinotrisus
Name
Sinotrisus sinensis Yin & Nomura sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype, male, labeled ‘Majiagou (3,140 m) / Kangding Xian / [Sichuan, China] / [same locality data in Chinese] / 9.ix.1998 / Toshio Kishimoto leg. // HOLOTYPE [red] / Sinotrisus sinensis sp. n. / Yin and Nomura / det. 2012, NSMT’.
Diagnosis
Vertex modified in male. Antennomeres VII elongate. Pronotum with indistinct spines along discal ridges; basolateral foveae punctiform. Mesotibiae with one tiny and another larger apical spur, larger spur shorter than first tarsomeres.
Description
Male (Fig. 4A). Length 3.20. Head (Fig. 5A) wider than long, HL 0.61, HW 0.66; vertex with foveae in broad median ‘∞’-shaped cavity, cavity densely setose at anterior margin; lacking occipital carinae; postocular margins parallel for short distance beneath eyes, then evenly narrowed toward head base; antennomeres IV (Fig. 5B) slightly shorter than VI, clubs formed by apical three antennomeres, IX–X nearly quadrate, XI elongate, narrowed toward apex in apical half. Pronotum slightly longer than wide, PL 0.65, PW 0.62; median longitudinal sulcus slightly widened to form oval antebasal impression, lacking median antebasal fovea; paranotal carinae extending through length of prosternum. Elytra slightly wider than long, EL 1.02, EW 1.17; slightly angulate at humeri. Mesotrochanters (Fig. 5C) with thick, short ventral spine; mesotibiae with apical spur (Fig. 5D) shorter than first tarsomeres; metatrochanters (Fig. 5E) with large elongate ventral projection. Abdomen slightly wider than long, AL 0.92, AW 1.05; sternites IV–VI with triangular mediobasal and basolateral ridges successively shorter and thinner. Aedeagus (Figs 5F–I) well-sclerotized, length 0.41. Female. Unknown.
Distribution
Southwest China: Sichuan.
Host ant
Formica sp.
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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