The dark brown adults of this species have bright orange hindwings. They closely resemble a hummingbird in flight and when hovering at a flower. Unlike most hawk-moths, this is a day-flying species and is usually seen visiting flowers in sunshine.
Pupates close to the ground in leaf litter or in the leaves of the food plant.
Anywhere.
Recorded in 35 (1.8%) of the 1900 10km squares of Bulgaria.
Last recorded in July 2013
Recorded date range (Adult): 13 June to 24 July
Recorded date range (Pupa): 13 July to 13 July