A Revision of the New World Cyamops Melander (Diptera: Periscelididae)

Abstract

Baptista, Alessandra R., and Wayne N. Mathis. A Revision of New World Cyamops Melander (Diptera: Periscelididae). Smithsonian Contributions to Zoology, number 563, 25 pages, 59 figures, 1 table, 1994.—The New World species of the genus Cyamops Melander, now numbering eight, are revised. New species (type locality in parenthesis): C. americus (Mexico. Chiapas: El Triunfo (49 km S Jaltenango, 1300-2000 m)), C. buenorum (Mexico. Chiapas: Cacahoatan (7 km N)), C.fasciatus (Brazil. Sao Paulo: Serra da Cantareira, Chapado), and C. colombianus (Colombia. Rio Raposo). Cyamops, with Stenomicra Coquillett as its apparent sister group, is placed in the subfamily Stenomicrinae, which is recharacterized. Planinasus Cresson, previously thought to be related to genera within Stenomicrinae, is shown to be more closely related to Periscelidinae. The monophyly of Cyamops is clearly demonstrated, as is that for some species groups within the genus. The relationships between species groups, however, are not well known. Phylogenetic studies, even for the fauna of the New World, are hindered by inadequate specimens to investigate many of the characters we have identified. Maps, keys to species, detailed distributional data, and illustrations (scanning electron micrographs and line drawings) are provided to assist in the identification of the species.