Lasionycta lagganata

Lasionycta lagganata is a moth of the family Noctuidae first described by William Barnes and Foster Hendrickson Benjamin in 1924. It is only known from three localities in south-western Canada: Banff and Waterton national parks in Alberta and the Purcell Mountains in south-eastern British Columbia.

It is diurnal and flies on fine shale scree slopes with sparse vegetation.

Adults are on wing from mid-July to mid-August.