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Bog Elfin
Callophrys lanoraieensis (Sheppard), 1934 Identification: Wingspan: 5/8-1". The smallest elfin. Told from similar Eastern by smaller size, smudgier, less distinct pattern below, and presence of small black spot in submarginal area on underside of hindwing. In addition, the somewhat similar Eastern Pine Elfin occupies a very different habitat. Distribution: Northeastern North America: New Brunswick south through eastern third of Maine; isolated populations in southern Quebec, eastern Ontario, and central Nova Scotia. Recorded from eastern New Hampshire (Pyle, 1981). Recently recorded from Massachusetts. Status in Massachusetts: Very rare and local. Not recorded during the Atlas period. Bog Elfin is listed as a Threatened species under the Massachusetts Endangered Species Act. 
Flight Period in Massachusetts: 18 May 3 June in Maine (Townsend); to June 9 elsewhere (Opler and Krizek, 1984). Larval Food Plants: Black Spruce (Picea mariana) is the main food source, but according to Scott (1986) occasionally uses Red and White Spruces as well. Adult Food Sources: Information for this species in Massachusetts is currently unavailable. Habitat: Bog Elfins generally occur only in the immediate vicinity of Black Spruce bogs. Life Cycle: Little known; presumably similar to that of other elfins. Overwinters as a chrysalis. This account was contributed by Brian Cassie.
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