Center for Systematic Entomology, Gainesville, Florida


Date of this Version



Otto RL. 2021. A new species of Coomanius Fleutiaux, 1924 (Coleoptera: Eucnemidae: Macraulacinae: Nematodini) from Southeast Asia. Insecta Mundi 0877: 1–5.


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

Published on July 30, 2021 by Center for Systematic Entomology, Inc. P.O. Box 141874 Gainesville, FL 32614-1874 USA


A new species of false click beetle, Coomanius badius Otto (Coleoptera: Eucnemidae), is described from Sarawak, Malaysia. An identification key is provided for species of Coomanius Fleutiaux distributed in the Southeast Asian region. Images for each species are provided.

During the spring and summer of 2020, many new species were discovered during identifications of beetles loaned from BMNH and other collections. One is described here in the first of many planned papers covering these new discoveries. Additional insights within Eucnemidae from around the world are still bound to continue as new information comes to light during the course of ongoing research. Coomanius was first described by Fleutiaux (1924) to include a single Vietnamese species, Coomanius lugubris Fleutiaux. The holotype is a female. Otto (2013) described and imaged what was thought to be a male of C. lugubris. However, it turned out to be misidentified and later Otto (2017) described it as Miruantennus cuneiformis Otto based on two specimens from Southeast Asia. This previously monotypic genus now consists of two species. Coomanius lugubris Fleutiaux (Fig. 1–3) is distributed in Laos and Vietnam. The new species is widespread across Southeast Asia including Sarawak, Laos, and the Philippine Islands.