Wikipedia
Spodolepis
Spodolepis substriataria is a moth of the Geometridae family. It is found from Alaska to Nova Scotia, south in the east to New Jersey and in the west to California.
The wingspan is 40-45 mm. The forewings are light grey with black speckling, often with shades of brown along the costa and apex. Adults are on wing from April to June in one generation per year.
The larvae feed on Pseudotsuga, Pinus, Populus and Salix species. They are dark with an intricate pattern of black and brown, resembling tree bark or a twig. The species overwinters in the pupal stage within a cocoon in leaf litter.