Pseudopsis (Pseudopsis) gansuensis Zerche, 1998

Yin, Zi-Wei, 2021, Two new species and additional records of Pseudopsis Newman from China (Coleoptera: Staphylinidae: Pseudopsinae), Journal of Natural History 55 (15 - 16), pp. 933-951 : 934

Pseudopsis (Pseudopsis) gansuensis Zerche, 1998

( Figures 1 , 3 (a,b), 8(c), 10(g))

Pseudopsis (Pseudopsis) gansuensis Zerche, 1998: 364 .

Type locality

China, Gansu, Mts . 25 km E Xiahe , 2805–2925 m .

Material examined (3 exx.)

1 ♂, ‘ China: Shaanxi, Mei Co ., Tangyu To., Taibai Mt., alt. 2750–3300 m, 12 .vii .2014, J .-Y . Hu & L. Tang leg ., 陕西省眉县汤峪镇太白山景区’; 1 ♂, same collection data as the preceding specimen, except ‘2350–3350 m’; 1 ♀, also from Taibai Mt ., except ‘Kaitianguan, 35°0 ′ 35.77 ″ N, 107°51 ′ 31.18 ″ E, 1853 m, 22–23 .v .2008, Xu & Huang leg., 陕西省眉县太白山开天关’.

Distribution

China: Shaanxi, Gansu ( Figure 10 (g)) .

Remarks

Pseudopsis gansuensis belongs to the P. sulcata complex, based on external morphology ( Figure 1 ). This species was originally described from a spot 25 km east of Xiahe County in Gansu, and later recorded from the Qinling Mountains in Shaanxi ( Zerche 1998, 2003). I have two males and one female from Taibai Mountain, the highest mountain of Qinling. Both males were dissected to check the aedeagus ( Figure 3 (a,b)) and terminal abdominal segments ( Figure 8 (c)). It appears that the diagnostic narrow apical portion of the median lobe of the aedeagus, the rounded apex of the median lobe, and the short parameres are stable between the population of Gansu and Shaanxi. The apical structure of the endophallus on the left side is composed of a single row of large spines in the population of Shaanxi, while the endophallus includes two rows of similar, but slightly smaller, spines overlapping one another in the population of Gansu ( Zerche 1998, fig. 1). The posterior margin of sternite IX ( Figure 8C ) of this species is slightly emarginate. The epipleural carinae of the elytra are not visible in dorsal view.

Figures

Figure 1. Pseudopsis gansuensis. (a) Dorsal habitus; (b) head and pronotum; (c) right elytron. Scale bars: a, b = 0.5 mm; c = 0.3 mm.

Figure 3. Aedeagus (a, c) and enlarged endophallus (b, d) of Pseudopsis gansuensis (a, b) and P. gonggaensis (c, d). Scale bars: 0.2 mm.

Figure 8. Aedeagus (a), enlarged endophallus (b), and abdominal segment IX of Pseudopsis suchi (f), P. gansuensis (c), P. pengi sp. nov. (d), and P. serrata sp. nov. (e). Scale bars: 0.2 mm.

Figure 10. Distribution of Pseudopsis in Asia. (a) General distribution; (b) P. acuta Zerche, 1992; (c) P. atratula Zerche, 1992; (d) P. crenata Zerche, 2000; (e) P. dabaensis Zerche, 2003; (f) P. filum Zerche, 2003; (g) P. gansuensis Zerche, 1998; (h) P. gonggaensis Zerche, 1998.