''Idia concisa'', the pale-winged idia (also known as ''Idia'' '' aemula'' since it has not been formally described) is a

litter moth The Herminiinae are a subfamily of moths in the family Erebidae. The members of the subfamily are called litter moths because the caterpillars of most members feed on dead leaves of plants, though others feed on living leaves, and/or the mushro ...

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'') ...

. The species was first described by

William Trowbridge Merrifield Forbes William Trowbridge Merrifield Forbes (April 23, 1885 Westborough – April 12, 1968 Worcester) was an American entomologist who specialized in Lepidoptera and Coleoptera Beetles are insects that form the order Coleoptera (), in the superor ...

in 1954. It is widespread across much of eastern North America. 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 20 mm. Adults are on wing from May to October. There is one generation in the north-east. Larvae have been reared on the dead leaves of cherry.

References

* * Herminiinae Moths described in 1954 {{Herminiinae-stub