Genus Cyamops Melander Cyamops Melander, 1913: 291. Type species: C. nebulosus Melander, by original designation DIAGNOSIS: Small, dark-bodied flies with broader wings; possessing the following combination of features that distinguish the genus from Stenomicra and Stenocyamops: anteroventral margins of eyes closely approximated, with facets in this area distinctly enlarged; fronto-orbital plates below FO setae silvery microtomentose; inner vertical setae absent; often with pair of inner fronto-orbital setae between pair of outer FOs; acrostichal setulae in two rows; anal lobe of wing, vein A 1 +CuA 2, and alula present; anepisternum with silvery microtomentum, occasionally with several of fine setae on posterior margin; male genitalia (surstyli, hypandrium) distinctly asymmetrical. COMMENTS: This is a worldwide, monophyletic genus of 28 species that has been well documented (Baptista and Mathis, 1994 [revision New World species]; Khoo, 1984 [Australian species]; Baptista and Mathis, 2000 [review of world species]).

Published as part of Grimaldi, David A., 2009, The Asteioinea of Fiji (Insecta: Diptera: Periscelididae, Asteiidae, Xenasteiidae), pp. 1-60 in American Museum Novitates 3671 on page 23, DOI: 10.1206/685.1, http://zenodo.org/record/5358027