Nymphomyiidae
Diagnostic description:
Very small flies, 1.5-2.5 mm long, pale, slender, weakly sclerotized, sparsely setose. Flagellum clavate, stalk-like and annulated basally, inflated apically. Compound eye holoptic ventrally but not dorsally. Thorax elongate-subcylindrical, with three large independent sternites. Wing long, slender, narrowly triangular or strap-like, without anal lobe, and deciduous along a definite line of weakness near base leaving a short truncated scale-like stub; margin with dense fringe of long delicate setae, longer on posterior margin than on costal margin. Legs slender; fore coxae more widely spaced than mid or hind coxae; femora and tibiae each subdivided by a subbasal membranous area. (Kevan & Cutten 1981)