Pella cooterorum MARUYAMA, 2006

Assing, Volker, 2015, New species and additional records of Lomechusini from the Palaearctic region, primarily from China (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 65 (2), pp. 243-262 : 255-256

Pella cooterorum MARUYAMA, 2006

( Figs 50–57 )

Material examined: China: Gansu: 2 ♂♂ [1 teneral], mountains SE Longnan, 33°11'N, 105°14'E, 2130 m, N-slope with scree, stony soil sifted, 7.VIII.2012, leg. Assing & Wrase (cAss, cSch ); 7 exs., Lenglong Ling mountains, 60 km NNW Honggu, Jin Sha Gorge , 36°52'N, 102°39'E, 2330 m, mixed forest, litter and moss sifted, 12.VII.2011, leg. Schülke (cSch, cAss) ; 2 exs., same data, but 14.–15.VII.2011 (cSch, cAss) ; 2 exs., same data, but pitfall traps, 12.–13.VII.2011, leg. Wrase (cSch, cAss). Qinghai : 20 exs., Daban Shan , 62 km NNW Honggum , 36°51'N, 102°37'E, 2240 m, stream valley with mixed forest, pitfall traps, 26.–29.VI.2011, leg. Wrase (cSch, cAss) ; 31 exs., same data, but 11.–15. VII.2011 (cSch, cAss) ; 10 exs., same data, but loamy slope, 26. & 29.VI.2011 (cSch, cAss) ; 13 exs., same data, but 2240–2350 m, litter and moss sifted, 10.VII.2011, leg. Schülke (cSch, cAss) ; 8 exs., same data, but 26.VI.2011, leg. Schülke (cSch, cAss) ; 1 ex., same data, but 26.VI.–10. VII.2011, leg. Wrase (cAss) ; 4 exs., same data, but 2275 m, litter sifted, 10.VI.2011, leg. Wrase (cSch, cAss) ; 1 ex., same data, but 26.VI.2011 (cAss) ; 1 ex., Daban Shan , 80 km NNW Honggu , 36°59'N, 102°26'E, 2350–2450 m, stream valley with mixed forest, litter and moss sifted, 27.VI.2011, leg. Schülke (cSch). Yunnan : 3 ♂♂, 1 ♀, mountains W Dongchuan, Sedan Snow Mountain Scenic Resort , 26°06'N, 102°55'E, 2620 m, secondary pine forest, litter, moss, and roots of herbs sifted, 14.VIII.2014, leg. Assing (cAss) ; 1 ♂, 1 ♀, NE Kunming , 25°09'N, 102°54'E, 2280 m, secondary pine forest, with scattered old alder, litter sifted, 11.VIII.2014, leg. Assing & Schülke (cSch) .

Comment: This species was previously known only from the Chinese provinces Beijing and Yunnan ( MARUYAMA 2006). The above specimens are brachypterous, with the hind wings of strongly reduced length (just projecting beyond posterior margin of elytra).

The specimens from Yunnan are distinguished from those from Qinghai and Gansu by an on average more transverse pronotum. Moreover, remarkable variation in the shape of the spermatheca was observed ( Figs 54–57 ). Since no additional distinguishing characters were found and since the median lobe of the aedeagus is practically identical ( Figs 50–53 ), however, these differences are interpreted as intraspecific variation.

Many of the specimens from Gansu and Qinghai were collected with pitfall traps with vinegar.

Figures

Figs 46–64: Pella reuteri (46–47), P. lugens from Gansu (48–49), P. cooterorum from Qinghai (50–51, 54), Gansu (55), Yunnan: Dongchuan env. (52, 56), and Yunnan: Kunming env. (53, 57), P. jureceki from Gansu (58–60), and P. zhoui from Qinghai (61–64): median lobe of aedeagus in lateral and in ventral view (46–53, 58–59, 61–62); spermatheca (54–57, 60, 63–64). Scale bars: 0.2 mm.