''Furcula cinerea'', the gray furcula moth, is a species of

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

Notodontidae Notodontidae is a family of moths with approximately 3,800 known species. The family was described by James Francis Stephens in 1829. Moths of this family are found in all parts of the world, but they are most concentrated in tropical areas, espe ...

. It was first described by Francis Walker in 1865. It is found in the United States, southern Canada and the

Northwest Territories The Northwest Territories (abbreviated ''NT'' or ''NWT''; french: Territoires du Nord-Ouest, formerly ''North-Western Territory'' and ''North-West Territories'' and namely shortened as ''Northwest Territory'') is a federal territory of Canada. ...

. 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 33–45 mm. Adults are on wing from April to September in the south and from May to August in the north. There are two generations per year in the south. In the north there is only one generation. The larvae feed on the leaves of '' Betula'', ''

Populus ''Populus'' is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar (), aspen, and cottonwood. The we ...

'' and '' Salix'' species. Larvae can be found from spring to fall in the south and from July to August in the north. The species overwinters in the pupal stage.

References

Moths described in 1865 Notodontidae Moths of North America {{Notodontidae-stub