Eupithecia lachrymosa Hulst 1900

A fairly widespread western species; no reasons for concern.

Adults are on the wing in Alberta from mid May through early July.

A western species, occurring from central Saskatchewan west to southern Vancouver Island, north to Tweedsmuir Park, BC and Tolman Bridge in Alberta, south to California. In Alberta found in wooded areas in the grasslands region, north to Tolman Bridge Recreation Area.

A small dark grey-brown geometrid, slightly above average in size for the genus Eupithecia (1.9-2.4 cm wingspan). Markings obscure except for a fairly prominent dark forewing discal dot. The presence of dark brownish shading along the cubital vein at the bases of veins 3 and 4 and short dark transverse dashes on the postmedian line can be used to identify some specimens. However, the genitalia should be examined for positive identification. The square shape of the valves with a prominent median costal process and the narrow lyre-shaped 8th sternite in the male, and the very long appendix bursa and an almost completely sclerotized ductus in females will identify lachrymosa (Bolte, 1990).

Woodland and shrub.

Poorly known. Adults are nocturnal and come to light.

Reported hosts include willow (Salix), Paper Birch (Betula papyrifera), Ceanothus, and Alder (Alnus) (Prentice, 1963; McKay, 1951; McGuffin, 1958).

Eupithecia lachrymosa is a moth in the family Geometridae first described by George Duryea Hulst in 1900. It is found in North America from central Saskatchewan west to southern Vancouver Island, north to British Columbia and Alberta and south to California.

The wingspan is 19–24 mm. Adults are dark grey brown with obscure markings, except for a fairly prominent dark forewing discal dot.

The larvae feed on Betula papyrifera, Salix, Ceanothus, and Alnus species.

Eupithecia lachrymosa là một loài bướm đêm trong họ Geometridae.