Ottawa (Dunrobin), ON Canada
11:44PM EST (left)
20 July 2002 10:29PM
Resting specimens of Clostera apicalis
characteristically hold their wings close to and almost rolled around their
bodies, as in both photos above, and I have not yet succeeded in
photographing a specimen with its wings in a flatter, more open position. Looking sideways at the moth
at rest, however, you can still see an obvious white squiggle of the postmedial
line just below the costal edge of the forewing, with shades of rusty brown
around it. The middle of the forewing has an oblique whitish line
crossing from the "top" of the medial area at the costa, down to
meet the postmedial line at the inner margin, quite unlike the lines on the
forewing of Clostera albosigma (7895), which
also occurs in my area.
According to Handfield (1999), the larvae of Clostera albosigma
generally feed on willow, poplar and birch species, and often form communal
nests of silk. There are two
generations, in late spring and summer, in my area.
I have only photographed this species
twice in three years: in 2001 on 22 July; in 2002 on 20 July.