Two new species and additional records of Pseudopsis Newman from China (Coleoptera: Staphylinidae: Pseudopsinae) Author Yin, Zi-Wei text Journal of Natural History 2021 2021-07-30 55 15 - 16 933 951 http://dx.doi.org/10.1080/00222933.2021.1925768 journal article 10.1080/00222933.2021.1925768 1464-5262 5464928 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.