Frosted elfin
ExploreCallophrys irus
Type: invertebrate
Status:
Species Guide
Frosted elfin
Callophrys irus
Species Type: invertebrate
Conservation Status:
Identification
The Frosted elfin is slightly larger than most other elfins that are similar in appearance. Adults range in size from 1 in.-1.25 in. (26-32 mm). Sexes are similar. The upper surface of the wings are a drab brown color. A small “tail” extending from the hindwings is a distinguishing feature used to help identify this species. The back edge of the hindwing often has a white “frosting," for which this species is named. A black spot near the “tail” on the hindwing is almost always present and is an important field mark for proper identification. Another characteristic feature of the under side of the hindwing is a very crooked white line that runs roughly parallel to the body and divides the wing in half.
Distribution & Habitat
Distribution and Habitat
The Frosted elfin is present along most of the east coast, except for Maine (where it is presumed to have been extirpated), with isolated populations existing in southeastern Texas (and surrounding areas), Michigan, Indiana, and Wisconsin. New Jersey may be the stronghold for this species (Schweitzer 1994), with Assunpink Wildlife Management Area (WMA) and Belleplain State Forest having well-known colonies in the state (Gochfield and Burger 1997).
Dry clearings and open areas that are natural (e.g. savannas) or of human origin (e.g. power-line right of ways and roadsides). The presence of food plants (see Diet) is also of importance.