About Eupithecia graefii (Hulst, 1896)
Eupithecia graefii, commonly known as Graef's pug, is a species of moth in the family Geometridae. This species was first described by George Duryea Hulst in 1896. It is distributed in North America, spanning from south-western Alberta west to Vancouver Island, north to Alaska, and south to California. It inhabits wooded areas. The wingspan of Eupithecia graefii ranges from 17 to 25 mm. Adult moths are most active on the wing during summer, but individuals have been recorded from April to November. The larvae of this moth feed on plant species from the genera Arbutus and Gaylussacia, and may also feed on species from the genera Thuja and Pseudotsuga. Larval coloration is variable, with shades ranging from green to rosy pink and reddish pink.