Synonyms and other taxonomic changes
Five species distributed world wide. Of those, three species occur in the Nearctic region.
The group is distinguished by the shape of the pronotum and the 11th antennomeres.
The species are further identified by examining the lateral ridge of the pronotum and male aedeagus.
1 Lateral ridge of pronotum incomplete, dorsal surface of lateral lobes strongly serrated.............A. drurii Kirby
1' Lateral ridge of pronotum complete, dorsal surface of lateral lobes minutely serrated.............................2
2 Antennae generally short, pale coloration, lateral lobes straight (viewed laterally)............A. desertorum Muona
2' Antennae elongate, dark coloration, lateral lobes dorsally hooked (viewed laterally)..........A. californicus Muona
Distributed along the west coast of the Nearctic region. One species is widespread in the S. U.S. up to the southern Great Lakes region, Caribbean and as far south to southern Mexico.
Largely found in forested areas.
June through the end of July.
The genus is closely related to Phyllocerus, a group distributed in Europe, Africa and Madagascar.
Muona, J. 1993. Review of the Phylogeny, Classification and Biology of the Family Eucnemidae (Coleoptera). Entomologica Scandinavica Supplement 44: 133 pp.
Muona, J. 2000. A Revision of the Nearctic Eucnemidae. Acta Zoologica Fennica. 212: 106 pp.