''Scythris arachnodes'' 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 ...

of the family Scythrididae. It is found on the

Canary Islands The Canary Islands (; es, Canarias, ), also known informally as the Canaries, are a Spanish autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to the African mainland, they are west of Mo ...

. 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 ...

is 7–10 mm. The forewings are black, with a few greyish white scales at the base and two greyish white transverse bands. The hindwings are dark leaden grey.lepiforum.de
/ref> The larvae probably feed on lichens on the surfaces of rocks. They feed from within a web.

References

Moths described in 1908 arachnodes {{Scythrididae-stub