The genus Ecdytolopha consists of 10 species and ranges from Peru, north through Central America and the U.S. to southern Canada. Forewings are dark brown basally and light gray or white apically with a dark spot near the tornus in many species. Male genitalia are distinguished by the following characters: tegumen rounded; uncus and socii absent; valvae elongate, cucullus densely setose; and vesica with numerous deciduous cornuti. Female genitalia are distinguished by two signa in the corpus bursae, and the location of the ostium, which is usually located in a deep invagination of sternum VII. Adamski and Brown (2001) provide keys to males and females.
Larvae are similar to other species in the Cryptophlebia-Ecdytolopha group, with an enlarged L-pinaculum on the prothorax that extends beneath (and usually beyond) the spiracle. Larvae of Gymnandrosoma can be separated from those of Ecdytolopha by the distance between the V setae on A9: approximately the same as the distance between Vs on A8 in Ecdytolopha and 1.2-2.0 times the distance between Vs on A8 in Gymnandrosoma.
The single species treated here, E. insiticiana, is the locust twig borer from economic literature. Larvae feed within new growth on locust and can cause tree disfigurement. There are many records of Ecdytolopha larval interceptions at U.S. ports of entry; however, most of these probably refer to Gymnandrosoma, as species such as Gymnandrosoma aurantianum were placed in Ecdytolopha prior to 2001.
Adamski, D. and J. W. Brown. 2001. Systematic revision of the Ecdytolopha group of genera (Lepidoptera: Tortricidae: Grapholitini) in the New World. Entomologica Scandinavica Supplement 58. 86 pp.
Gilligan, T. M., D. J. Wright and L. D. Gibson. 2008. Olethreutine moths of the midwestern United States, an identification guide. Ohio Biological Survey, Columbus, Ohio. 334 pp.
Solomon, J. D. 1995. Guide to insect borers in North American broadleaf trees and shrubs. Forest Service Agriculture Handbook AH-706, USDA, Washington, D. C. 735 pp.