Intestinarius longiceps Yin and Li

Yin, Zi-Wei, Li, Li-Zhen & Zhao, Mei-Jun, 2011, On the Chinese species of the genus Intestinarius Kurbatov (Coleoptera, Staphylinidae, Pselaphinae), ZooKeys 116, pp. 15-24 : 19-20

Intestinarius longiceps Yin and Li sp. n. Figs 258, 11, 1431 –3843– 44, 49-50

Type locality.

Kuankuoshui Nature Reserve, Guizhou Province, Southwest China

Type material

(2 ♂♂, 10 ♀♀). Holotype: ♂, labelled 'CHINA: Guizhou Prov. / Kuankuoshui N. R. / Baishaogou / 04.vi.2010 / alt. 700 m / YIN & ZHAI leg.'; Paratypes: 1 ♂, 8 ♀♀, same label data as holotype; 1 ♀, same, but ‘750– 900 m / 05.vi.2010 / YIN & ZHAI leg.'; 1 ♀, same, but '03.vi.2010 / alt. 700 m’.

Description.

Measurements: male (female). BL 2.54-2.63 (2.49-2.57), HL 0.59-0.60 (0.59-0.62), HW 0.51-0.52 (0.51-0.52), PL 0.56-0.57 (0.55-0.56), PW 0.55-0.57 (0.55-0.56), EL 0.74-0.75 (0.73-0.75), EW 0.90-0.91 (0.85-0.88), AL 0.63-0.69 (0.61-0.64), AW 0.76-0.80 (0.78-0.80). Length of aedeagus 0.50. Width of female genitalia 0.27.

General morphology similar to Intestinarius guangdongensis sp. n., but it differs in the followings: Male maxillary palpomere IV not modified; postocular margins remarkably long; antennae (Fig. 8) more robust; mesotibiae (Fig. 11) constricted in apical portion, apical tooth slightly shorter than first tarsomere; metatrochanter (Fig. 14) on posterior margin with broad protuberance, not setose; tergite VII as in Figs 31-32; tergite VIII as in Fig. 33; sternite VIII as in Fig. 34; sternite IX as in Fig. 35; aedeagus as in Figs 36-38; female tergite VIII as in Fig. 43; sternite VIII as in Fig. 44; genitalia as in Figs 49-50.

Distribution.

Known only from the type locality.

Etymology.

The new species is named after its long postocular margins.

Remarks.

The new species may be distinguished from all its congeners by the combination of the male secondary sexual characters, viz. the mesotibiae and metatrochanter, the tergites VII–VIII and the sternites VIII–IX, and the shapes of male and female genitalia.

Key to Chinese species of the genus Intestinarius Kurbatov

All the Chinese species are externally very similar, thus, a faithful identification must be based on the dissection of the male and female genital organs combined with certain male secondary sexual characters included in the following key.