Ottawa (Dunrobin), ON Canada
26 June 2007 (date of moth capture) (left and right)
Both photographs are of the same specimen.
My identification of Euclemensia bassettella was based on
Hodges, R.W., Gelechioidea: Cosmopterigidae, in Dominick, R.B.
et al., The Moths of North America North of Mexico, Fascicle 6.1 (London:
E.W. Classey and The Wedge Entomological Research Foundation, 1978). Some
additional information was also obtained from Forbes,
William T.M., The Lepidoptera of New York and Neighboring States, Primitive
Forms, Microlepidoptera, Pyraloids, Bombyces (Ithaca, New York: Cornell
The forewing of Euclemensia bassettella is mainly deep
reddish orange with black markings. A short black bar extends outward in
the basal area, near the costa. There is a broad black streak along the
inner margin, beginning at about one-third of the way out from the base, and
tapering most of the way around the outer margin as well, adjacent to the black
fringe. There is also a shallow, elongated black triangle at the middle of
the costa, enclosing a small whitish or yellowish spot at the inner end.
This black triangle is followed by a narrow yellowish white streak along the
costa to the apex. There appear to be raised scales or scale tufts on the
basal black bar and at the inner end of the black streak along the inner
margin. The thorax is black. The outer ends of the antennae are
whitish. Overall, the moth has a very smooth, sleek appearance, with
somewhat metallic reflections. Hodges (1978) indicates a wing length
ranging from 4.0 to 6.2 mm.
According to Hodges (1978), the larva of Euclemensia
is an internal parasitoid on armored scales (Kermes species). He indicates the adult moth flies
from early May through early September.
My records to date for Euclemensia bassettella (each date
representing "the night of") are in the table below: