Oodes gracilis, : Fiori, 1903

Guéorguiev, Borislav & Liang, Hongbin, 2020, Revision of the Palaearctic and Oriental representatives of Lachnocrepis LeConte and Oodes Bonelli (Coleoptera: Carabidae), with special account on Chinese species, Zootaxa 4850 (1), pp. 1-89 : 54-55

“ gracilis ” species group

Diagnosis. The only species of this group possesses two autapomorphies that distinguish it from other members of Oodes : (1) stria 7 more or less reduced along elytral anterior third (like in taxa of Nanodiodes Bousquet, 1986 , but to a far lesser extent); and (2) sclerite of internal sac of median lobe with three sclerotized nail-like spikes (seen in lateral view). This unique set of features suggests that O. gracilis occupies an isolated position in the genus. In addition, the species in question has two other differences compared to other species of Oodes s.str. First, the metacoxal basal sulcus is shortened, ending at the medial fifth; it is a homoplastic state, as it occurs also in O. japonicus and Pseudoodes coelestinus . The second peculiarity is the quite reduced punctuation on thoracic part of body.