''Udeoides nigribasalis'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family Crambidae. It was described by George Hampson in 1913. It is found in

Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...

. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan of ...

is about 18 mm. The forewings are greyish, the basal area strongly suffused with black, the rest of the wing with red-brown. The basal area is bounded by a slight pale somewhat incurved antemedial line, strongly defined by black on the outer side. There is a pale discoidal spot defined by brown, rounded above and acuminate below with a semi-circular black mark above it on the costa. The postmedial line is black, dilated into a spot on the costa, oblique to vein 6, then inwardly oblique and waved, at vein 3 retracted to below the angle of the cell, then again excurved and with some deep brown suffusion beyond it on the costal area and from the middle to the inner margin. There is a subterminal black spot above the middle and some black points on the costa towards the apex and a terminal series with blackish spot at the apex. The hindwings are greyish, suffused with fuscous brown, the apical part of the terminal area darker and with an indistinct curved postmedial line.''The Annals and Magazine of Natural History: Including Zoology, Botany, and Geology''

References

Endemic moths of Kenya Moths described in 1913 Spilomelinae {{Spilomelinae-stub