Batriscenellus pulcher 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 : 45-46

Batriscenellus pulcher Yin & Li , new species

( Figs. 4 , 9 , 14–15 , 21, 27 , 33 )

Type material. Holotype: 3, labeled ‘ CHINA: Zhejiang Prov. / Qingliangfeng Mt. / Baibuling / alt. ca. 1,000 m, 15.vii.2009 / FENG, YUAN & YIN leg.’. Paratypes: 1 3, 1 Ƥ, same label data as holotype; 1 3, 1 Ƥ, same label data, but ‘E-Lang-GU / alt. 900 m, 23.vii.2009 ’; 3 3, 3 ƤƤ, same label data, but ‘Jiufu Village / alt. 600–1,000 m / 19.vii.2009 ’.

Description. Male. Reddish brown ( Fig. 4 ), length 1.81–1.93. Head wider than long, HL 0.42–0.43, HW 0.43– 0.44, coarsely punctate, median carina distinct, eyes with about 30 facets; antennae long ( Fig. 9 ). Pronotum about as long as wide, PL 0.43–0.44, PW 0.45–0.46, disc with rough punctations. Elytra wider than long, EL 0.61–0.63, EW 0.73–0.74. Abdomen wider than long, AL 0.41–0.43, AW 0.62–0.63; tergite IV ( Figs. 14–15 ) larger than V– VII combined, excavation located near base, lateral setiferous patches large, partially covering margins lateral to the excavation, width between discal carinae 0.26; tergite V with big median excavation. Length of aedeagus ( Figs. 17, 23 ) 0.30.

Female. Similar to male in size, length 1.92–1.99, HL 0.43–0.44, HW 0.43–0.44, PL 0.44–0.45, PW 0.44–0.46, EL 0.56–0.57, EW 0.71–0.72, AL 0.49–0.53, AW 0.66–0.67. Eyes with about 22 facets. Abdominal tergites simple. Width of female genitalia ( Fig. 29 ) 0.28.

Remarks. This species is most closely allied to B. chinensis and shares with it a number of characters (see remarks under B. chinensis ). The parallel sides of the excavation on tergite IV, the lack of small patches mesal to the sides of that excavation, the much wider median impression of tergite V and the forms of the male and female genitalia readily separate this species from B. chinensis .

Distribution. East China (Zhejiang)

Etymology. The species is named after its beautiful appearance.

Figures

FIGURES 3 – 4. Habitus of Batriscenellus spp. 3. B. orientalis. 4. B. pulcher. 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.