''Rustica pseudouncus'' 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

Erebidae The Erebidae are a family of moths in the superfamily Noctuoidea. The family is among the largest families of moths by species count and contains a wide variety of well-known macromoth groups. The family includes the underwings ('' Catocala'') ...

first described by Michael Fibiger in 2008. It is known from southern

Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...

. Adults have been found from February to July, suggesting multiple generations per year. 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 12–15 mm. The forewing is long; narrow and the reniform stigma is weakly marked (like in Tortricidae species), the costal patch at the upper medial area is well marked and blackish. The subterminal line is marked, dark brown and waved. The terminal line on the hindwing is weakly defined.

References

* Micronoctuini Moths described in 2008 Taxa named by Michael Fibiger {{Micronoctuini-stub