About Hemaris gracilis Grote & Robinson, 1865
This species has a wingspan of 40 to 45 millimeters. It can be told apart from similar species by a pair of red-brown bands along the sides of its thorax. The dorsal surface of the thorax ranges in color from green to yellow green, and the underside is sometimes brown with white. Individuals of this species have a red abdomen. Their wings are transparent with reddish-brown borders. The outer edge of the transparent area on the forewings is even, and the forewing cell has a median row of scales. This species is distributed across North America, ranging from Nova Scotia to central Florida along the East Coast, and extending west through New England to Michigan and Saskatchewan. It is listed as a threatened species in Connecticut, and classified as a species of Special Concern in Massachusetts.
