Cotundra Blue (Icaricia cotundra)

Variously treated historically as a subspecies/variant of Lupine and/or Acmon Blue, recent authorities (E.g. Mike Fisher, Jon Pelham, et al.) treat this as a separate species that flies in a handful of high elevation sites in Colorado and possibly other Rocky Mountain states.
Cotundra Blue (Icaricia cotundra)
Cottonwood Pass, Chaffee Co., CO
13 July 2016

NABA treats this as a high altitude subspecies of Acmon Blue (P. acmon), but Acmon Blues use legumes as host plants while this species uses buckwheats, so it's more closely related to Lupine Blue.

Below are Utah Lupine Blues

North Carolina Butterflies | North American Butterflies | Jeff's Nature Page

Created on ... June 17, 2019 |