Batricavus abdominalis
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Ordo: Coleoptera
Familia: Staphylinidae
Genus: Batricavus
Name
Batricavus abdominalis Yin & Li sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type-locality
China, Hainan Province: Lingshui County, Diaoluoshan Natural Reserve, 18°43'36.93"N, 109°52'55.21"E, 950 m a.s.l.
Type material
(8 ♂♂, 24 ♀♀) Holotype: ♂, labeled, ‘China: Hainan Prov. / Diaoluoshan N. R. / road to reservoir / 25.iv.2012, 950 m / Pan et Li leg.’. Paratypes: 2 ♂, 8 ♀♀, same label data as holotype; 1♂, 1♀, same label data except ‘Zi-Wei Yin leg.’; 4 ♂♂, 15 ♀♀, same label data except ‘Dai et Peng leg.’.
Other material examined
5 ♂♂, 6 ♀♀, labeled ‘China: Hainan Prov. / Ledong County / Jianfengling N. R. / 15.xi.2005 / Jian-Hua Huang leg.’.
Diagnosis
Length 1.50–1.60; antennal club three-segmented, lacking obvious modification in male; male with simple protibiae and modified metafemora and tergite IV.
Description
Male. Length 1.50–1.59; body (Fig. 1A) reddish brown, maxillary palpi and tarsi lighter. Head slightly wider than long, HL 0.34–0.35, HW 0.39–0.41. Eyes each composed of about 20 large facets. Antennal club three-segmented, segment VIII smallest, IX–XI enlarged. Pronotum rounded laterally, slightly wider than long, PL 0.38–0.40, PW 0.42–0.46. Elytra wider than long, EL 0.53–0.57, EW 0.61–0.63, with scattered long setae. Protibiae simple; metafemora broadened mesally at apical 1/4 (Fig. 2B). Abdomen much narrower than elytra, AL 0.25–0.27, AW 0.53–0.55; tergite IV (Fig. 2A) with large median cavity comprising complicated structure. Aedeagus (Figs 2C, D) length 0.20, well-sclerotized, with elongate dorsal lobe.
Female. Measurements: BL 1.54–1.60, HL 0.33–0.34, HW 0.40–0.41, PL 0.37–0.38, PW 0.41–0.43, EL 0.50–0.53, EW 0.60–0.63, AL 0.34–0.35, AW 0.56–0.58.
Generally similar to male; eyes smaller, each composed of about 15 facets; tergite VIII (Fig. 2E) with smooth posterior margin; genital complex (Fig. 2F) transverse, width 0.24, well sclerotized.
Distribution
South China: Hainan.
Etymology
The specific epithet refers to the male sexual character present on abdominal tergite IV.
Original Description
- Yin, Z; Li, L; 2012: Two new species and new record of Batricavus Yin & Li (Coleoptera, Staphylinidae, Pselaphinae) from China ZooKeys, 215: 33-39. doi
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