Callophrys irus
Encyclopedia
The Frosted Elfin is a species of Lycaenidae
Lycaenidae
The Lycaenidae are the second-largest family of butterflies, with about 6000 species worldwide, whose members are also called gossamer-winged butterflies...

 that is native to North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

.

Description

The wingspan ranges from 22–24 mm (0.866141732283465–0.94488188976378 in), hindwings have one short tail. The top side of the wing is brown, males have long oval dark spots on the leading edge of their forewings. The hindwings have submarginal black spots above the tail and below the postmedian line is faint.

Life history

There is one flight from March–April in the south which occurs between mid May to early June in the north. Females will lay eggs singly on flower buds. The caterpillars eat both the flower and the developing seedpods. Chrysalids hibernate in loosely formed cocoons beneath litter below the plant. Larval foods include the pea family (Fabaceae
Fabaceae
The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, is a large and economically important family of flowering plants. The group is the third largest land plant family, behind only the Orchidaceae and Asteraceae, with 730 genera and over 19,400 species...

), indigo (Baptisia tinctoria
Baptisia tinctoria
Baptisia tinctoria is a herbaceous perennial plant in the family Fabaceae. It is native to eastern North America.-Distribution:...

), lupine (Lupinus perennis
Lupinus perennis
Lupinus perennis is a medicinal plant in the Fabaceae family...

), and rattlebox (Crotalaria sagittalis).

Range

They range from local colonies in Maine
Maine
Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

 west across New York
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

, southern Ontario
Ontario
Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

, and Michigan
Michigan
Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

 into Wisconsin
Wisconsin
Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

, then south along the Atlantic coast
Atlantic Coast
The Atlantic Coast is any coast fronting the Atlantic Ocean. The term differentiates the coasts of countries or continents with coastlines on more than one body of water, such as North America, South America, Africa and Europe.-See also:*Indian Ocean...

 west into Louisiana
Louisiana
Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...

 and eastern Texas
Texas
Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

. Within this range they tend to stick to open woods and scrublands.

In 2011, zoologists with the Virginia Department of Conservation and Recreation found populations of the butterfly in the city of Suffolk, Virginia
Suffolk, Virginia
Suffolk is the largest city by area in Virginia, United States, and is located in the Hampton Roads metropolitan area. As of the 2010 census, the city had a total population of 84,585. Its median household income was $57,546.-History:...

, and a volunteer also found a population at Antioch Pines Natural Area Preserve
Antioch Pines Natural Area Preserve
The Antioch Pines Natural Area Preserve is a Natural Area Preserve located along the Blackwater River near Zuni, Virginia. It contains growths of loblolly pine and turkey oak, and supports various species that are rare in the Commonwealth, including Plukenet's flatsedge, sandy-woods chaffhead and...

. The butterfly had not been been reported in Virginia since 1994.
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