About Eupithecia lariciata (Freyer, 1841)
The larch pug, with the scientific name Eupithecia lariciata (Freyer, 1841), is a moth species that belongs to the family Geometridae. This species has a wide distribution. It can be found across Europe, the Ural Mountains, West and Central Siberia, the Altai Mountains, Transbaikalia, Yakutia, the Russian Far East, Mongolia, Korea, Japan, and in North America ranging from Yukon and Newfoundland to New York and Arizona. The wingspan of adult moths measures between 19 and 22 mm, while the forewings have a length of 10 to 12 mm. The forewings have a whitish grey ground color marked with dark crosslines. The median crossline shows a distinct sharp angle. A series of small dark stains appear along the costal margin of the forewings, and the thorax bears a tuft of white hairs. The hindwings are also whitish grey, and they have a small dark spot located in the tornal area. Larvae of this species are quite variable in appearance: they may be brown or green, they may or may not have light longitudinal stripes, and they may or may not have a series of bell-shaped dark spots running along the back.
