''Gyros atripennalis'' 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 ...

in the family Crambidae. It was described by

William Barnes William Barnes (22 February 1801 – 7 October 1886) was an English polymath, writer, poet, philologist, priest, mathematician, engraving artist and inventor. He wrote over 800 poems, some in Dorset dialect, and much other work, including a co ...

and James Halliday McDunnough in 1914. It is found in North America, where it has been recorded in

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

. 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 13 mm. The forewings are blackish with a deep purplish-red tinge. The basal half of the wing is defined outwardly by a curved dark line just beyond which a black dash in the cell represents the reniform spot. There is a blackish line close to outer margin with which it is practically parallel. The space between these two lines is sprinkled with white scales. The hindwings are deep black."Some New North American Pyraustinae"
Adults have been recorded on wing in July.

References

Moths described in 1914 Odontiini {{Odontiinae-stub