Caterino & Dégallier, 2007
The single species of this genus has been collected only by flight interception traps. There is one species in this myrmecophilous genus of Histeridae.
This taxon is very distinctive and phylogenetically isolated among the Chlamydopsinae. It is best defined and diagnosed based on the form of the prothorax (Figs 4C, 13C–D), which is very different from that of any other member of the subfamily. Although in gross terms it shares the hidden scutellum with Orectoscelis, Pheidoliphila, and others, the manner in which the scutellum is concealed, by the posteriorly prolonged pronotal margin, is very different. The short prothorax, raised (oblique) anterior pronotal margin, and single median pronotal projection are also distinctive. The pronotal shape and hidden scutellum also immediately distinguish it from Chlamydopsis, Eucurtia or Ectatommiphila. The male genitalia of Quasimodopsis are highly distinctive, with the dorsal portion of the 8th abdominal segment (Fig. 14A) divided into two lightly sclerotised, apically incurving processes, much like the processes of segment 9 in Chlamydopsis (e. g., Fig. 8K).