Ottawa (Dunrobin), ON Canada
8:37PM EST (top left)
19 May 2003 10:55PM EST (top right)
16 June 2003 9:06PM EST (bottom)
of this species is based on comparison of my photos with
specimens in the Canadian National Collection in Ottawa, to which access was
kindly arranged by Dr. J. Donald Lafontaine of Agriculture Canada.
Lacking other resources for identification, my identification
is therefore tentative pending expert confirmation based on specimens
Epiblema scudderiana is one of some 8 species of Epiblema
known to occur in the Ottawa area. It tends to rest with its wings
almost rolled around its body, presenting the shape of a small cylinder, the
top third of which is dark brown to black, the center third of which is
off-white, and the outer third of which is patterned in gray, black and, at
the apex and outer margin, dark brown. The medial area is also usually
marked with some gray patterning toward the costa and may have stray gray
spots in the whitish area. A series of short diagonal stripes
originates along the outer third of the costal edge, becoming more
pronounced towards the apex. I have not measured the wing length of Epiblema
scudderiana, but estimate it at a little more than 10 mm.
larval host plant of Epiblema scudderiana is goldenrod, and the
common name of this species is the Goldenrod Gall Moth. Research has
been carried out at Carleton University, Ottawa, Canada regarding the life
cycle of this species ( http://www.carleton.ca/~kbstorey/insects.htm
), with a particular focus on its cold hardiness.
I have photographed
this species in 2001, on 15 June; in 2002, on 4 and 5 June; in 2003, on 19,
23 and 27 May, and on 5, 14, 16 and 20 June.