''Stenoma pertinax'' 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

Depressariidae Depressariidae is a family of moths. It has formerly been treated as a subfamily of Gelechiidae, but is now recognised as a separate family, comprising about 2,300 species worldwide.Heikkilä, M. ''et al''. 2014: Morphology reinforces proposed mo ...

. It is found in

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

. 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 17 mm. The forewings are light ochreous with a dark purple-fuscous irregular blotch on the base of the costa, reaching nearly half across the wing. There is a dark purple-fuscous spot on the costa before the middle. The plical stigma is very small and dark fuscous, the second discal is rather large and quadrate and there is a broad rather dark purple-fuscous terminal fascia, anterior edge running from five-sixths of the costa to two-thirds of the dorsum, with a projection above the middle where a train of several indistinct dots of dark fuscous irroration runs to the costal spot, and a convex-prominent on the lower third so as to touch the second discal stigma beneath, including a suffused pale ochreous streak along the upper part of termen, and marked on the termen with five or six rather large blackish dots. The hindwings are dark fuscous.''Exotic Microlepidoptera'' 1 (15): 459

References

Moths described in 1915 Taxa named by Edward Meyrick Stenoma {{Stenoma-stub