Batriscenellus chinensis Yin & Li

Yin, Zi-Wei, Li, Li-Zhen & Zhao, Mei-Jun, 2011, Batriscenellus Jeannel (Coleoptera, Staphylinidae, Pselaphinae) redefined, with notes on the Chinese species, Zootaxa 3016, pp. 37-50 : 42-43

Batriscenellus chinensis Yin & Li , new species

( Figs. 1 , 6 , 12–13 , 17, 23 , 30 )

Type material. Holotype: 3, labeled ‘ CHINA: Zhejiang Prov. / Longwangshan Mt. / Qianmutian / alt. 1.3 km, 25.v.2009 / FENG, LIU, YUAN & YIN leg.’. Paratypes: 5 3, 14 ƤƤ, same label data as holotype; 2 3, same label data, but ‘alt. 1.5 km, 29.v.2009 ’; 1 3, same label data, but ‘Dongguan, 26.v.2009 / FENG, YUAN & YIN leg.’; 10 3, 23 ƤƤ, same label data, but ‘alt. 1.3 km, 27.v.2009 ’; 8 3, 8 ƤƤ, same label data, but ‘ YUAN leg.’

Description. Male. Reddish brown ( Fig. 1 ), length 2.01–2.09. Head wider than long, HL 0.41–0.43, HW 0.45– 0.46, coarsely punctate below antennal tubercles, median carina distinct, eyes with about 30 facets; antennae long ( Fig. 6 ). Pronotum as long as wide, PL 0.47–0.49, PW 0.47–0.48, disc lacking rough punctuations. Elytra wider than long, EL 0.66–0.67, EW 0.73–0.74. Abdomen wider than long, AL 0.47–0.50, AW 0.66–0.68; tergite IV ( Figs. 12–13 ) larger than V–VII combined, median excavation located near base, lateral setiferous patches large, completely covering margins lateral to the excavation, width between discal carinae 0.21; tergite V with small median impression. Length of aedeagus ( Figs. 17, 23 ) 0.21.

Female. Similar to male in size, length 1.85–1.91, HL 0.38–0.39, HW 0.46–0.47, PL 0.41–0.42, PW 0.44–0.45, EL 0.55–0.57, EW 0.71–0.72, AL 0.51–0.53, AW 0.66–0.69. Eyes with about 15 facets. Abdominal tergites simple. Width of female genitalia ( Fig. 29 ) 0.26.

Remarks. The new species is most closely related to B. pulcher described below. They share the basal location of the excavation of tergite IV, the presence of a pair of large setiferous patches lateral to the excavation, and a modified tergite V. They may be separated by the sides of the excavation not parallel, the presence of a pair of small patches mesal to the sides of excavation, the narrow median impression of tergite V, and by the form of the male and female genitalia of B. chinensis .

Distribution. East China (Zhejiang)

Etymology. The species is named after its type locality.

Figures

FIGURES 1 – 2. Habitus of Batriscenellus spp. 1. B. chinensis. 2. B. femoralis. Scales: 0.5 mm.

FIGURES 5 – 9. Left antennae of Batriscenellus spp. 5. B. auritus. 6. B. chinensis. 7. B. femoralis. 8. B. orientalis. 9. B. pulcher. Scales: 0.3 mm.

FIGURES 10 – 15. Abdominal tergites IV – V of Batriscenellus spp. 10 – 11. B. auritus. 12 – 13. B. B. chinensis. 14 – 15. B. pulcher. Scales: 0.2 mm.

FIGURES 16 – 28. Aedeagi (16 – 27) and metafemur (28) of Batriscenellus spp. 16 – 21. aedeagus, in lateral view. 22 – 27. same, in ventral view. 16, 22. B. auritus. 17, 23. B. chinensis. 18, 24, 28. B. femoralis. 19, 20, 25, 26. B. orientalis. 21, 27. B. pulcher. Scales: 0.1 mm.

FIGURES 29 – 33. Female genitalia of Batriscenellus spp. 29. B. auritus. 30. B. chinensis. 31. B. femoralis. 32. B. orientalis. 33. B. pulcher. Scales: 0.1 mm.