Hinton, H. E. 1939. An inquiry into the natural classification of the Dryopoidea, based partly on a study of their internal anatomy. Shepard, W. 2000. Zaitzev, P. 1910. Dryopidae, Cyathoceridae, Georyssidae, Heteroceridae.
Body strongly convex.
Sides of body not evenly curved. Upper surfaces of body clothed with distinct hairs, setae or scales. Upper surfaces of body without deep foveae. Prothorax, metathorax and-or abdomen without extrusible glands. Head width just behind eyes not distinctly greater than prothoracic width.