Batriscenellus auritus (Löbl) Lobl, 2011

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 : 41-42

Batriscenellus auritus (Löbl) , new combination

( Figs. 5 , 10–11 , 16, 22 , 29 )

Batrisiella aurita Löbl, 1973: 92 . Type locality: North Korea.

Material examined. 1 3, 2 ƤƤ, labeled ‘ CHINA: Zhejiang Prov. / Hangzhou City / Zhuantang Town, CAA / 15.iii.2010, alt. 10 m / Zhi-Zhou YU leg.’ New record to China.

Redescription. Male. Reddish brown, length 1.70. Head wider than long, HL 0.35, HW 0.40, coarsely punctate below antennal tubercles, median carina distinct, eyes with about 35 facets; antennae long ( Fig. 5 ). Pronotum as long as wide, PL and PW 0.40, disc lacking punctuations. Elytra slightly wider than long, EL 0.60, EW 0.66. Metafemora slightly broadened at posterior half, covered with sensory setae. Abdomen wider than long, AL 0.35, AW 0.56; tergite IV ( Figs. 10–11 ) larger than V–VII combined, excavation located near apex, lateral setiferous patches small and indistinct, width between discal carinae 0.27. Length of aedeagus ( Figs. 16, 22 ) 0.27.

Female. Similar to male in size, length 1.70–1.75, HL 0.34–0.35, HW 0.39–0.40, PL 0.41–0.42, PW 0.39–0.41, EL 0.48–0.50, EW 0.61–0.65, AL 0.47–0.48, AW 0.56–0.61. Eyes with about 20 facets. Metafemora not broadened, lacking sensory setae. Abdominal tergites simple. Width of female genitalia ( Fig. 29 ) 0.18.

Remarks. This species is closely related to B. satoi . They share the excavation of tergite IV being located near the apex, the presence of a pair of small setiferous patches lateral to the excavation, and the unmodified tergite V in the male. They may be distinguished by the smaller size, the lack of a filament structure in the excavation, the modified male metafemora, and by the shapes of the male and female genitalia of B. auritus .

Distribution. North Korea, East China.

Figures

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.