New York Natural Heritage Program
Frosted Elfin
Callophrys irus (Godart, [1824])
Frosted Elfin Steve Walter
Family: Blues, Coppers, Hairstreaks, Elfins (Lycaenidae)

State Protection: Threatened
A native species likely to become an endangered species within the foreseeable future in New York (includes any species listed as federally Threatened by the United States). It is illegal to take, import, transport, possess, or sell an animal listed as Threatened, or its parts, without a permit from NYSDEC. 1) Any native species likely to become an endangered species within the foreseeable future in New York. 2) Any species listed as threatened by the U.S. Department of the Interior.

Federal Protection: Not Listed

State Rarity Rank: S1S2
A State Rarity Rank of S1S2 means: Critically Imperiled or Imperiled in New York - Especially or very vulnerable to disappearing from New York due to rarity or other factors; typically 20 or fewer populations or locations in New York, very few individuals, very restricted range, few remaining acres (or miles of stream), and/or steep declines. More information is needed to assign a single conservation status.

Global Rarity Rank: G3
A Global Rarity Rank of G3 means: Either rare and local throughout its range (21 to 100 occurrences), or found locally (even abundantly at some of its locations) in a restricted range (e.g. a physiographic region), or vulnerable to extinction throughout its range because of other factors.

Did you know?
The frosted elfin is extripated from Canada and some U.S. states. In states such as New York, where the species remains, populations are not secure and are highly management dependent.

State Ranking Justification [-]
The Frosted Elfin has become globally rare and is extirpated in Canada. In the United States, there are no states where it is secure and it has become extirpated in some states. Much of the habitat has been lost in New York and small isolated colonies are unlikely to persist. Threats exist in many places and include high deer numbers and inappropriate habitat management. There are a few well known, protected, and adequately managed populations of the lupine feeding race. However, there may be fewer than five viable metapopulations in New York. This rare species has become highly management dependent.

Short-term Trends [-]

Long-term Trends [-]