Published online by Cambridge University Press: 31 May 2012
The Mexican and Central American species of the Genus Isomira Mulsant (Coleoptera: Alleculidae) are revised. Ten species and four subspecies are treated, of which six species and all the subspecies are described as new. New species are: Isomira championi, I. howdeni, I. rotundata, I. mexicanus, I. acuta, and I. alticola. New subspecies are: Isomira howdeni hidalgoensis, I. subaenea soror, I. s. punctata, and I. s. guatemalensis. A key is presented for the determination of the taxa.