''Thiotricha polyaula'' 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 ...

of the family Gelechiidae. It was described by Edward Meyrick in 1918. It is found in

Assam Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...

, India. 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 12–13 mm. The forewings are rather dark brown with the markings ochreous white. There is a slender median streak from the base, branching at one-fourth into two lines, the upper running to five-sixths but more or less widely interrupted in the middle, the lower running to three-fifths. There is a narrow pointed streak below the fold from the base to one-third and short subdorsal and dorsal lines from the base, as well as a pointed costal streak on the basal third, sometimes partially obsolete. A suffused dark fuscous transverse spot is found from the dorsum before the middle, immediately followed by a white longitudinal streak beneath the fold to the tornus and there is a fine costal line from before the middle, becoming slightly divergent and terminated by a very oblique strigula at four-fifths. From beneath the apex of this a line to the tornus, acutely angulated inwards above the fold. Just beyond these markings is a fine obtusely-angulated blue-leaden-metallic transverse line and there are three indistinct marks on the costa towards the apex, the last edging a black apical dot preceded beneath by a minute blue-leaden-metallic dot. The hindwings are grey, paler in the disc anteriorly.Meyrick, Edward (1916–1923)
''Exotic Microlepidoptera''. 2 (4): 125.

References

Moths described in 1918 Taxa named by Edward Meyrick Thiotricha {{Thiotrichinae-stub