''Ennomos subsignaria'', the elm spanworm moth, 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 Geometridae. The species was first described by

Jacob Hübner Jacob Hübner (20 June 1761 – 13 September 1826, in Augsburg) was a German entomologist. He was the author of ''Sammlung Europäischer Schmetterlinge'' (1796–1805), a founding work of entomology. Scientific career Hübner was the author of '' ...

in 1823. It is found in North America from

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

(south) to

Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...

(northwest) and east to the Atlantic coast. It is recorded infrequently in

Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is ...

through accidental importation in asparagus. 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 35–40 mm. Adults are pure white except for yellow branches on the antennae. They are on wing from late May to August. one generation per year. The larvae feed on elm, apple, birch, maple, and oak.

Gallery

File:Ennomos_subsignaria_infestation.jpg, Infestation File:Ennomos_subsignaria_eggs.jpg, Eggs File:Ennomos_subsignaria_eggs1.jpg, Eggs parasitised by ''

Telenomus alsophilae ''Telenomus'' is a genus of parasitoid wasps from the subfamily Telenominae. The genus was first described by Alexander Henry Haliday in 1833. Species in this genus parasitise the eggs or immature stages of other insects. Known hosts include ...

'' File:Ennomos_subsignaria_larva.jpg, Larva File:Ennomos_subsignaria_damage.jpg, Damage File:Ennomos_subsignaria_pupae.jpg, Pupae File:Ennomos_subsignaria_adult.jpg, Adult

References

Moths described in 1823 Moths of North America Ennomini Taxa named by Jacob Hübner {{Ennominae-stub