Neoryctes Arrow, 1908

Ratcliffe, Brett C., 2014, A New Genus and Species of Dynastinae (Coleoptera: Scarabaeidae) from the Galápagos Islands, Ecuador, other New Species of Cyclocephalini, Pentodontini, and Phileurini from South America, and a Revised Key to the Genera of New World Pentodontini, The Coleopterists Bulletin 68 (4), pp. 663-680 : 663-680

Neoryctes Arrow, 1908

The genus Neoryctes contains four species and was revised by Cook et al. (1995). Each species is endemic to a single island in the Galápagos Archipelago: Floreana, San Cristóbal, Santa Cruz, and Santiago. A fifth species is described herein from Isabela.

All species in the genus are characterized by a length of 13–27 mm; short and broad body form; reddish brown color; clypeus narrowed to a bidentate apex; mandibles exposed and evenly rounded; antenna 9- or 10-segmented with a short club; pronotum simply convex; prosternal process small and subtriangular; hindwings reduced; propygidium with two longitudinal stridulatory ridges; pygidium convex, especially in males; protibia tridentate or quadridentate; and parameres generally subrectangular with broadly lanceolate apices. All the species are rare, and their life history is unknown.