Contribution to the knowledge of the cavernicolous beetle genus Aspidaphaenops Uéno from Guizhou (Coleoptera: Carabidae: Trechinae) Author Tian, Mingyi Author Huang, Sunbin text Zootaxa 2018 4422 2 244 258 journal article 29147 10.11646/zootaxa.4422.2.5 58bd0a34-478a-4c5d-b1c6-efb610eba18d 1175-5326 1455595 2C026AEA-280E-444B-A70B-38D493EE2B8E Genus Aspidaphaenops Uéno, 2006 Uéno, 2006: 9 Type species: Aspidaphaenops masakii Uéno, 2006 Remarks. Members of the genus Aspidaphaenops could be divided into two species groups, namely, masakii species group containing three species ( A. masakii , A. volatidraconis and A. dudou n. sp. ) and reflexus species group with two species ( A. reflexus and A. xiongda n. sp. ). Main differences of the two groups are evident on pronotal and elytral configurations. In masakii species group the mentum bears a seta on either side near base of tooth, the pronotum is barrel-like, widest near the middle, with latero-margins of pronotum narrowly reflexed and elytra more elongate, shoulders not well-marked and sides ciliate throughout, versus mentum with two setae on either side, the pronotum more or less campanulate, widest at basal portion, latero-margins of pronotum strongly reflexed, elytra stouter, shoulders well-marked and evidently serrate at sides in reflexus species group. Range. Southwest Guizhou ( Fig. 1 ).