Published online by Cambridge University Press: 31 May 2012
The generic characters of Eumacronychia are reviewed and as here considered the genus includes 21 nominal forms of which 9 are described as new. All members are quite similar in habitus and difficult to distinguish except by reference to the male terminalia. A key to all known species is included to facilitate identification. The maximum distribution of the genus is centered in the southwestern United States with the present known extreme range extending from Canada to Guatamala.
Contribution No. 4772, Department of Entomology, Texas Agricultural Experiment Station.