Batriscenellus orientalis (Löbl), Lobl

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 : 47

Batriscenellus orientalis (Löbl)

( Figs. 3 , 8 , 19–20, 25–26 , 32 )

Batrisiella orientalis Löbl, 1973: 322 . Type locality: North Korea. Bariscenellus (Scaioscenellus) orientalis Nomura, 1991: 317 .

Batriscenellus (Coreoscenellus) brachygaster Nomura and Lee, 1993: 13 . Type locality: South Korea. (syn. by Nomura, 2005: 214)

Material examined. 1 3, labeled ‘ CHINA: Shanghai City / Minhang District / Bingjiang Wetland Park / 15.iv.2011, alt. 5 m / Liang TANG leg’; 3 3, 5 ƤƤ, labeled ‘ CHINA: Zhejiang Prov. / Huangzhou City / Zhuantang Town, CAA / 15.viii.2010, alt. 10 m / Zhi-Zhou YU leg.’. New record to mainland China.

Redescription. Male. Light reddish brown ( Fig. 3 ), length 2.15–2.31. Head wider than long, HL 0.40–0.41, HW 0.53–0.55, punctate only near antennal tubercles, median carina distinct, eyes with about 30 facets; antennae short ( Fig. 8 ). Pronotum about as long as wide, PL 0.53–0.54, PW 0.53–0.55, disc smooth. Elytra slightly wider than long, EL 0.74–0.76, EW 0.89–0.90. Abdomen wider than long, AL 0.49–0.58, AW 0.77–0.81; tergite IV larger than V–VII combined, simple in structure, width between discal carinae 0.27. Length of aedeagus ( Figs. 19– 20, 25–26 ) 0.31.

Female. Similar to male in size, length 2.21–2.34, HL 0.47–0.49, HW 0.52–0.53, PL 0.53–0.54, PW 0.53–0.54, EL 0.72–0.73, EW 0.87–0.88, AL 0.49–0.58, AW 0.83–0.84. Eyes with about 23 facets. Width of female genitalia ( Fig. 31 ) 0.23.

Remarks. The species is distinctive within the group by the form of its male and female genitalia. It was formerly recorded from the Korean Peninsula and Taiwan. To no surprise the species is also now known from East China.

Distribution. North Korea; South Korea; China: Taiwan, Zhejiang, Shanghai.

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 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.