Ottawa (Dunrobin), ON Canada

1 August 2002   1:16AM EST  (left)
28 July 2002   1:20AM EST  (right)

In my area, there simply isn't any other species similar to Pheosia rimosa, although there are European Pheosia species that look a lot like this.  Covell and others have called this the Black-Rimmed Prominent for the markings at the edges of its mostly white forewing, but its strikingly sleek streamlined appearance has always made me think of it as the racing-stripe moth.  Pheosia rimosa is one of the largest Notodontids in my area, with a wingspan of 4.5 to 6.2 cm (Covell, 1984).  The black area inside the inner margin of the forewing is streaked with white, and a brown shade fades from the black to the white part of the wing.  At the costal edge, the black marking is most prominent towards the apex.  The lower (or inner) part of the basal area of the forewing is a grayish yellowish beige in color, outside the black rim.

The host plants for the larvae of Pheosia rimosa are poplars and willows.  In my general area, according to Handfield (1999), the adult moth flies at any time from late May to the end of August.  

I have photographed this species in 2002, on 1 and 6 June, on 28 and 29 July, and on 1, 4, 9, 11 and 19 August.