Revision of the endemic Madagascan stag beetle genus Ganelius Benesh, and description of a new, related genus (Coleoptera: Lucanidae: Lucaninae: Figulini)

Authors

M. J. Paulsen, University of Nebraska State MuseumFollow

Date of this Version

12-29-2017

Citation

Insecta Mundi 0592: 1–16.

Comments

Published in 2017 by Center for Systematic Entomology, Inc. P. O. Box 141874 Gainesville, FL 32614-1874 USA.

Copyright held by the author(s). This is an open access article distributed under the terms of the Creative Commons, Attribution Non-Commercial License.

Abstract

This paper revises the genus Ganelius Benesh, which is endemic to Madagascar, in the stag beetle tribe Figulini Burmeister (Coleoptera: Lucanidae: Lucaninae). Species in the genus are striking in their highly sexually dimorphic mandibles, a character that rarely occurs in the tribe. The genus was previously comprised of four species, but three of these names were problematic or questionably applied. A lectotype is designated for G. madagascariensis Laporte, a neotype is designated for Ganelius oberndorferi Nonfried, and Nigidius passaliformis Benesh is newly synonymized with G. oberndorferi. Two new species, G. gnamptus Paulsen and G. zombi Paulsen, are described from western Madagascar. The identity of the overlooked Ganelius nageli (Kriesche) is fixed through a neotype designation, and the species is moved to the new genus Agnelius, which is distinguished from Ganelius by a lack of sexual dimorphism, serrate protibiae, and a more flattened body.