Review of the species of Stenothemus from Southeast China (Coleoptera, Cantharidae) Author Yang, Yuxia Author Ge, Shujuan Author Yang, Xingke Author Liu, Haoyu text European Journal of Taxonomy 2021 2021-04-12 744 119 144 http://dx.doi.org/10.5852/ejt.2021.744.1307 journal article 7344 10.5852/ejt.2021.744.1307 3ec281e9-e0b8-4d51-ba2a-327e7d355c6b 2118-9773 4690236 187C3A01-3095-4A13-BC14-6C4D460CB757 Stenothemus kuatunensis Wittmer, 1979 Fig. 5D‒F Stenothemus kuatunensis Wittmer, 1979: 330 , fig. 2. Material examined Holotype CHINA • ♂ ; [p] “KUATUN, FUKIEN // China, 26.9.(19)46// (TSCHUNG SEN.)”, [h] “ Stenothemus // kuatunensis //Wittm.”, [p] “Naturhistorisches// Museum Basel // Coll. W. Wittmer ”, [p]“ CANTHARIDAE // CANTH00002946”; NHMB . Other material CHINA – Anhui • 2 ♂♂ ; Fengyangshan , Miaopudi ; 1430 m a.s.l. ; 24 Aug. 2007 ; S.L. Liu leg.; IZAS . – Zhejiang • 1 ♂ ; Qingyuan , Baishanzu ; 1500 m a.s.l. ; 9 Sep. 1993 ; H. Wu leg.; IZAS . Supplementary description AEDEAGUS ( Fig. 5D‒F ). Strongly swollen dorsally in basal part, contracted in diameter basally; basal piece obviously shorter than dorsal plate of each paramere, with a large, bifurcate conjoint middle nodule at base of ventral side; ventral process of each paramere nearly parallel to one another, long and flattened, apex rounded; dorsal plate slightly shorter than ventral process, nearly parallel-sided, layered in middle, external layer roundly emarginate in middle, internal layer feebly emarginate, apex subrounded; apical parts of laterophyses compressed and next to each other in middle, apex rounded and obviously exceeding middle emargination between dorsal plates. Remarks In the original publication ( Wittmer 1979 ), the aedeagus of this species was illustrated only in ventral view; here, it is also illustrated in dorsal and lateral views. Distribution China ( Anhui , Fujian , Zhejiang ). Key to the species of Stenothemus from Southeast China 1. Elytra red, with moderately indicated longitudinal costae on disc...................................................... ............................................................................................ S. chinensis ( Wittmer, 1982 ) comb. nov. – Elytra black, yellow or light brown, with weakly or hardly indicated longitudinal costae on disc... 2 2. Pronotum subrounded, with lateral margins obviously sinuate, posterior angles distinctly protruding .......................................................................................................................................... 3 – Pronotum subquadrate, with lateral margins nearly parallel or feebly sinuate, posterior angles hardly protruding .......................................................................................................................................... 5 3. Elytra light brown, with irregular dark markings; aedeagus: dorsal plate of each paramere rounded at apex, layered but without protuberance at inner margin................... S.kuatunensis Wittmer, 1979 – Elytra yellow or black, without markings; aedeagus: dorsal plate of each paramere acute at apex, not layered, with a wide triangular protuberance at inner margin ........................................................... 4 4. Elytra uniformly yellow...................................................... S. biimpressiceps ( Pic, 1930 ) comb. nov. – Elytra black, with light yellow margins................................................ S. fukienensis Wittmer, 1974 5. Antennae extending beyond elytral apices, antennomeres III‒XI obviously widened and flattened in male..................................................................................... S. longicornis Y. Yang & H. Liu sp. nov. – Antennae unlike above, at most reaching apical one-third length of elytra ...................................... 6 6. Elytra yellow, black at apices; aedeagus: basal piece with a triangular protuberance but without middle nodule on ventral side, laterophyses hooked at apices ........ S. nigriceps ( Wittmer, 1955 ) comb. nov. – Elytra unlike above, without apical macula; aedeagus: basal piece with a middle nodule on ventral side, laterophyses acute, never hooked.............................................................................................. 7 7. Elytra black, at most light brown at margins; antennae with smooth longitudinal grooves on antennomeres III‒XI in male ............................. S. limbatipennis (Pic, 1926) stat. rev. et comb. nov. – Elytra yellow or light brown, at most with brown markings; antennae without smooth longitudinal grooves on antennomeres III‒XI in male ..........................................................................................8 8. Elytra uniformly yellow; aedeagus: dorsal plate of each paramere abruptly narrowed in middle ...... ................................................................................................... S. flavus Y. Yang & X. Yang sp. nov. – Elytra light brown, with brown markings; aedeagus: dorsal plate of each paramere nearly parallelsided.................................................................................... S. pallicolor ( Wittmer, 1951 ) comb. nov.