Revision of the genus Platyscelis Latreille, 1818 from China (Coleoptera: Tenebrionidae: Platyscelidini) Bai, Xing-Long Ren, Guo-Dong Zootaxa 2019 2019-05-22 4609 1 101 126 Latreille 1818 [492,619,873,900] Insecta Tenebrionidae Platyscelis GBIF Animalia Coleoptera 1 102 Arthropoda genus    1 Lateral carina of elytra reaching sutural angle, visible completely in dorsal view................................... 2  - Lateral carina of elytra merging with epipleura, not reaching sutural angle, visible completely or only in anterior part in dorsal view............................................................................................... 3   2 Elytral surface without longitudinal carinae or indistinct; outer margin of protibiae straight, outer angle of apex rectangular; metatibiae weakly curved; apex of parameres nearly straight in lateral view ( Fig. 34).................................................................................................   Platyscelis( Pleiopleura) ovata Ballion, 1878  - Elytral surface with longitudinal carinae obviously; distal part of outer margin of protibiae obviously curved to inner side, outer angle of apex obtuse; metatibiae obviously curved; apex of parameres curved to ventral side in lateral view ( Fig. 36).................................................................   Platyscelis( Pleiopleura) striata Motschulsky, 1859   3 Anterior margin of pronotum deeply emarginate, strial punctures merging into longitudinal long furrows at sides, interstriae with extremely dense and coarse punctures; distal part of parameres wrapped in a hat ( Figs. 29–30).................................................................................   Platyscelis( Platyscelis) subcordata Seidlitz, 1893  - Anterior margin of pronotum weakly emarginate or straight, strial punctures not merging into longitudinal long furrows at sides; distal part of parameres not wrapped in a hat ( Figs. 5–28, 31–32).......................................... 4   4 Outer margins of parameres without hooks at apex in dorsal view ( Figs. 7, 15)..................................... 5  - Outer margins of parameres with hooks at apex in dorsal view ( Figs. 5, 9, 11, 13, 17, 19, 21, 23, 25, 27, 31)............. 6   5 Pronotum with sparse punctures on disc, moderately dense and shallow at sides, narrowly depressed or weakly flatted at sides of basal; elytra long oval; apex of protibiae moderately extended; protarsi wide, mesotarsi narrower than protarsi; apex of parameres strongly narrower than base in dorsal view and hook-liked curved to dorsal side in lateral view ( Figs. 7–8)......................................................................   Platyscelis( Platyscelis) amdoensis Egorov, 1989  - Pronotum with dense punctures on disc, denser at sides, widely flatted at sides from base to middle; elytra short oval; apex of protibiae strongly extended; protarsi narrow, mesotarsi nearly equal to protarsi; apex of parameres weakly narrower than base in dorsal view and straight in lateral view ( Figs. 15–16)..............   Platyscelis( Platyscelis) brevis Baudi di Selve, 1876   6 Elytral surface covered with soft and thick setae ( Figs. 37–38).................................................. 7  - Elytral surface covered with soft setae occasionally, especially at apex, or nearly without any setae.................... 8   7 Elytral surface with long thick setae ( Fig. 38); metatibiae straight and narrow; parameres narrowing towards apex arcuately, outer margins with extremely weak hooks at apex in dorsal view, apex not curved to dorsal side in lateral view ( Figs. 21–22)..................................................................   Platyscelis( Platyscelis) freyi Kaszab, 1940  - Elytral surface with short thick setae ( Fig. 37); metatibiae curved, wide and flat; parameres narrowing towards apex straightly, outer margins with long and sharp hooks at apex in dorsal view, apex curved to dorsal side in lateral view ( Figs. 5–6)........................................................................   Platyscelis( Platyscelis) acutipenis sp. nov.   8 Elytral surface without longitudinal carinae or traces......................................................... 9  - Elytral surface with longitudinal carinae and traces.......................................................... 14   9 Posterior angles of pronotum rectangular, sharp and weakly protruded outward apically...........................................................................................   Platyscelis( Platyscelis) suiyuana Kaszab, 1940  - Posterior angles of pronotum obtuse or rectangular, neither sharp nor protruded outward apically..................... 10   10 Pronotal punctures extremely dense and coarse and merged at sides; parameres wide and short in dorsal view ( Fig. 27)......................................................................   Platyscelis( Platyscelis) licenti Kaszab, 1940  - Pronotal punctures unconnected at sides; parameres long in dorsal view ( Figs. 9, 11, 13, 19)......................... 11   11 Parameres narrow, narrowing from base to apex gradually at sides in dorsal view ( Figs. 9, 11); elytral punctures shallow, nearly disappeared at apex................................................................................... 12  - Parameres wide at base, emarginate at middle at sides in dorsal view ( Figs. 13, 19); elytral punctures clear............. 13   12 Pronotum not depressed along lateral margins; outer margins of parameres with short and obtuse hooks at apex in dorsal view, apex curved to ventral side in lateral view ( Figs. 9–10)....   Platyscelis( Platyscelis) angusticollis angusticollis Kaszab, 1940  - Pronotum depressed along lateral margins from base to middle; outer margins of parameres with long and sharp hooks at apex in dorsal view, apex straight in lateral view ( Figs. 11–12)....   Platyscelis( Platyscelis) angusticollis platytarsis Kaszab, 1940   13 Elytra apically wide and nearly straight, emarginate at sutural angle, surface with dense and deep punctures; parameres moderately narrowing towards apex in dorsal view, apex curved to dorsal side in lateral view ( Figs. 13–14)................................................................................   Platyscelis( Platyscelis) bogatshevi Egorov, 1989  - Elytra apically round, not emarginate at sutural angle, surface with sparse punctures; parameres strongly narrowing towards apex in dorsal view, apex curved to ventral side in lateral view ( Figs. 19–20).....................................................................................................   Platyscelis( Platyscelis) densipunctata sp. nov.   14 Lateral carina of elytra wide, visible completely in dorsal view...........   Platyscelis( Platyscelis) confusa Schuster, 1934  - Lateral carina of elytra narrow, apex not visible in dorsal view occasionally...................................... 15   15 Punctures extremely dense and moderately coarse on head; pronotal punctures dense and coarse at sides, and merged partially; parameres obviously wide in dorsal view, apex curved to dorsal side occasionally in lateral view ( Figs. 23–24)..........................................................................   Platyscelis( Platyscelis) gebieni Schuster, 1915  - Punctures dense and fine on head; pronotum with unconnected oval dense and fine punctures at sides; parameres narrow in dorsal view, dorsal side straight in lateral view ( Figs. 25–26).................   Platyscelis( Platyscelis) helanensis sp. nov.