Revision of the obesus species group of the stag beetle genus Nigidius MacLeay (Coleoptera: Lucanidae: Lucaninae: Figulini)

Resumen

This paper contains nomenclatural acts concerning the genus Nigidius MacLeay in the stag beetle tribe Figulini Burmeister (Coleoptera: Lucanidae: Lucaninae). A revision of species in the obesus group results in the correction of multiple nomenclatural problems. A lectotype is designated for N. obesus Parry, and the identity of N. helleri Boileau is corrected. A new species, Nigidius gravelyi Paulsen, is described from Borneo. The synonymy of Nigidius larssoni de Lisle is transferred from N. obesus to N. dawnae Gravely.