Ottawa (Dunrobin), ON Canada
10:24PM EST (top)
23 May 2003 8:34PM EST (bottom left)
18 May 2003 7:46PM EST (bottom right)
lunula is not native to North America, but was introduced to Ontario in
the 1960's as a biological control for yellow toadflax (Linaria vulgaris)
Calophasia lunula has an overall streaky
appearance, in shades of brown, black and pale gray. Its most
eye-catching markings are the sharply defined white reniform spot, and the
brown and white streaked fringe. The orbicular spot is white-filled,
often teardrop-shaped and outlined in black. The antemedial and postmedial
lines are most evident at the inner margin, where their pale gray to beige
filling contrasts with the darker median area. A fairly sharp basal
dash, a fine black line outlined in white, extends through the end of the
innermost scallop of the am line into the median area. The
hindwing is gray-brown, shaded darker toward the outer margin.
resting position of Calophasia lunula is usually in the form of a tent; I
often find it nestled around the angle of a brick where the brick meets the
mortar of our house wall.
As mentioned above, the larvae of Calophasia
lunula feed on toadflax, listed as a noxious weed in many North American
jurisdictions. In my general area, there are two generations of C.
lunula each year, the first from early May into June, and the second
from mid-July to late August
I have photographed this
species in 2000 on 23 July; in 2001 on 16 July; in 2002 on 7 May, on 1, 11
and 19 June, on 27 July, and on 11, 16 and 31 August; in 2003 on 17, 18, 23
and 29 May, and on 2 and 3 June.