Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1061434

Lupine Blue
Plebejus lupini

Observation date: August 16, 2015
Submitted by: plex1ppus
Specimen type: Photograph
Observation notes: Only one seen at this location, weedy stream side at forest edge, bordering large meadow. Interesting mix of Argynnii and Bolorians here, too, A atlan tis, A cybele, B bellona.
Status: Resident
Verified by: mikefisher
Verified date: August 07, 2017
Coordinator notes: cannot be identified with certainty without examining the genitalia : This is certainly P. lupini because P. acmon only occurs in lowland coastal western U.S. All inland populations are lupini and the group is still under study. The name "Lupine Blue" is a misnomer because it does not feed on lupine, the host across its range are buckwheats (Eriogonum spp.). The habitat description fits lupini and buckwheat was likely part of the flora there. P. acmon feeds only on legumes according to Paul Opler who has been studying the group for years. Mike (CO coordinator)
Checklist region(s): Bonner County, United States, Idaho