White-lined Hawk-moth Hyles lineata
Wingspan c.65-90 mm.
A single record of this American species was said to have been taken in Bridlington, East Yorkshire in the late 19th Century, since when there have been no further records, suggesting a possible accidental introduction.
The species closely resembles H. livornica, the Striped Hawk-moth, but differs by having more pale stripes on the sides of the thorax and another through its centre.
The larvae feed on a range of plants including willowherb (Epilobium), and there are two generations.