''Udea tetragramma'' 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 John Frederick Gates Clarke in 1965. It is found on the

Galápagos Islands The Galápagos Islands (Spanish: , , ) are an archipelago of volcanic islands. They are distributed on each side of the equator in the Pacific Ocean, surrounding the centre of the Western Hemisphere, and are part of the Republic of Ecuador ...

. 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 17–18 mm. The forewings are fuscous, strongly overlaid with ferruginous. There is a straight, transverse, ill-defined, fuscous line at two-fifths of the costa, extending to the dorsum at the basal third. From the apical sixth of the costa extends a transverse, ill-defined line to vein 2, then along vein 2 to the cell, then diagonally, outwardly and then straight to the dorsum at the outer two-thirds. There are three small white dots in the cell, preceded and followed by blackish-fuscous scales. There are also four ochreous-tawny spots on the outer half of the costa, alternating with suffused shades of blackish fuscous. On the termen, there are seven small, ill-defined blackish-fuscous dots. The hindwings are grayish fuscous. On the discocellulars and the bases of veins 6 and 8 there is a black spot preceded by a whitish area of the wing. From the apical fourth of the costa there is an irregular blackish-fuscous line, extending to the anal veins.Microlepidoptera of Juan Fernández Islands

References

tetragramma Moths described in 1965 {{Udea-stub