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Archeohomaloplia frolovi Ahrens, 2011 Additional material examined. 2 ♂♂ “Dol. r. Tunk-goho 22-VII-93 Potanin/ Paratypus Arch. medvedevi Nikolajev 1982 ” (ZIN). Updated key to the species of Archeohomaloplia (♂♂) 1 Hypomeron not carinate. Metatarsomere 1 shorter than the following tarsomere. Elytra and legs black . 2 1’ Hypomeron finely carinate. Metatarsomere 1 longer than the following tarsomere. Elytra dark brown, legs brownish . 14 2 Disc of pronotum with numerous long, erect setae . . 3 2’ Disc of pronotum without long setae. . 7 3 Setae on pronotum and elytra long, twice as long as ocular diameter . A. frolovi Ahrens, 2011 3’ Setae on pronotum and elytra moderately long, as long as ocular diameter . 4 4 Dorsal apophysis of aedeagus narrow . 5 4’ Dorsal apophysis of aedeagus wide and truncate at apex . A. xiajuan sp. nov. 5 Dorsal apophysis of aedeagus moderately long and straight (dorsal view). Setae on elytra shorter than intervals wide. Posterior angles of pronotum blunt. 6 5’ Dorsal apophysis of aedeagus strongly bent backwards at middle forming a sharp hook. Setae on elytra almost as long as intervals wide. Posterior angles of pronotum obsolete . . A. hebashana Ahrens, 2011 6 Right paramere strongly bent twice, behind basal third and shortly before apex . . A. yunnana (Miyake & Yamaya, 2001) 6’ Right paramere strongly bent once only, behind basal third . A. ganhaiziensis Ahrens, 2011 7 Basal marginal line almost complete medially . 8 7’ Basal marginal line widely interrupted medially. 12 8 Sides of clypeus strongly convex, basally slightly convergent, showing a distinct angle with the ocular canthus. Body size larger than 7 mm. Aedeagus with large lateral apophysis . . A. abbreviata (Fairmaire, 1897) 8’ Clypeus widest at base, angle between sides of clypeus and ocular canthus blunt and indistinct. Body size smaller than 6 mm . 9 9 Tegument of pronotum smooth and very shiny. . 10 9’ Tegument of pronotum micro-reticulate (80x) and slightly dull . A. kalabi Ahrens, 2011 10 Dorsal apophysis of ... |