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.