Ottawa (Dunrobin), ON Canada
12 July 2004 (moth captured the night of 11/12 July
12 July 2004 12:28AM EST (bottom)
Both photos are of the same specimen.
My thanks to Mr. James T. Troubridge of Agriculture Canada for
confirming my identification of this specimen.
Catocala sordida, also termed the Sordid Underwing, is
one of 28 species of Catocala that have been recorded from the Ottawa
area (J.D. Lafontaine, pers. comm., 2001). To date, I have observed 19 of these
species at my location. Collectively, these are referred to as the underwing
moths, for their often-colorful hindwings.
The forewing of Catocala sordida is medium gray and
somewhat mottled. The antemedial line is black, heaviest at the costa.
Outlines of the reniform and subreniform spots may be evident in the
median. The postmedial line is black, bending sharply inward near the
inner margin and almost touching the am line, then bending sharply again to the
inner margin. In the specimen illustrated here, the pm line is very thick
and heavy near the inner margin. The light gray or whitish subterminal
line is zigzag with dark gray shading along its inner edge. The terminal
line appears as a series of black scallops or dashes preceding the gray fringe.
The hindwing is banded in a brilliant orange-yellow and black, and there is a
gap in the outer black band which is not visible in the photos above. The
fringe is yellow-orange, partly checkered with black. Covell (1984) indicates a
wingspan of 3.7 to 4.5 cm.
According to Handfield (1999), the larvae of Catocala sordida
feed on blueberry. He indicates an adult flight season from before mid-July to
after mid-August for my general area.
My only record to date for Catocala sordida (each date
representing "the night of") is in the table below: