Silvery Blue

Glaucopsyche lygdamus (E. Doubleday, 1841)

Family: Lycaenidae

Status: Local resident in the western half of the state

NENHP Ranking: S3, Tier 2

Range: Subspecies of the Silvery Blue occupy most of the western half of North America from Alaska south through New Mexico and Arizona as well as much of the northern United States and southern Canada east through the New England states and New Brunswick. There are additional disjointed populations in Missouri and Arkansas and in the Appalachians. In Nebraska it can be found in rugged areas in the panhandle and the loess hills of the southwest.

Broods/Flight Times: One spring flight from mid-April into June

Larval Hostplant(s): While various legumes have been cited slender milkvetch (Astragalus gracilus) appears to be the preferred plant in Nebraska

Habitat: Loess hills and upland grasslands where the hostplant occurs

Found at: Box Elder and Gilbert-Baker SWMAs

Overwintering: As pupae

Similar Species: Arrowhead and Icariodes Blues


Silvery Blue, Box Elder SWMA, Photo by Jonathan Nikkila
This image has an empty alt attribute; its file name is slender-milkvetch-astragalus-gracilis-larval-hostplant-for-silvery-blues.jpg
Slender Milkvetch – larval hostplant for Silvery Blues
Silvery Blue male – dorsal
Silvery Blue male – ventral
Silvery Blue female – dorsal
Silvery Blue female – ventral

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