Batricavus hainanensis Yin & Li

Yin, Zi-Wei & Li, Li-Zhen, 2012, Two new species and new record of Batricavus Yin & Li (Coleoptera, Staphylinidae, Pselaphinae) from China, ZooKeys 215, pp. 33-39 : 35-36

Batricavus hainanensis Yin & Li sp. n. Figs 1B3

Type-locality.

China, Hainan Province: Lingshui County, Diaoluoshan Natural Reserve, 18°42'18.87" N, 109°52'59.48"E, 720 m a.s.l.

Type material.

(2 ♂♂, 5 ♀♀)Holotype: ♂, labeled, 'China: Hainan Prov. / Diaoluoshan N. R. / disc road / 26.iv.2012, 600-1,000 m / Dai et Peng leg.'. Paratypes: 1 ♂, 2 ♀♀, same label data as holotype; 1 ♂, same label data except 'road to reservoir / 25.iv.2012, 1,000 m’; 2 ♀♀, same label data except 'Zi-Wei Yin leg’.

Other material examined.

1 ♀, labeled 'China: Hainan Prov. / Jianfengling N. R. / Wufenqu area / 2.v.2012, alt. 900 m / Pan et Yin leg.'.

Diagnosis.

Length 1.62-1.69; antennal club weakly indicated by apical three antennomeres, lacking obvious modification in male; male with modified protibiae and simple metafemora and tergite IV.

Description.

Male. Length 1.62-1.67; body (Fig. 1B) reddish brown, maxillary palpi and tarsi lighter. Head slightly wider than long, HL 0.32-0.33, HW 0.39-0.41. Eyes each composed of about 30 facets. Antennal club formed by apical three antennomeres, segment VIII smallest, IX–XI enlarged. Pronotum rounded laterally, about as long as wide, PL 0.39-0.40, PW 0.40-0.41. Elytra wider than long, EL 0.56-0.58, EW 0.63-0.64, covered by short pubescence. Protibiae (Fig. 3A) triangularly expanded laterally near middle; metafemora simple. Abdomen narrower than elytra, AL 0.35-0.36, AW 0.58-0.59; tergite IV simple in structure. Aedeagus (Figs 3B, C) length 0.18, well-sclerotized, with elongate dorsal lobe.

Female. Measurements: BL 1.65-1.69, HL 0.34-0.35, HW 0.40-0.41, PL 0.38-0.39, PW 0.40-0.41, EL 0.53-0.54, EW 0.62-0.63, AL 0.40-0.41, AW 0.58-0.60.

Generally similar to male; eyes smaller, each composed of about 25 facets; tergite VIII (Fig. 3D, E) with serrate posterior margin; genital complex (Fig. 3F) transverse, width 0.27, well sclerotized.

Distribution.

South China: Hainan.

Etymology.

The specific epithet refers to the type locality.