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.
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