Geometer Moth – Subfamily Ennominae : species not identified
A very large family, it has around 23,000 species of moths described, and over 1400 species from six subfamilies indigenous to North America alone
The larva feed on various trees and shrubs including alder, aspen, birch, oak, rowan and willow. The species overwinters as a pupa.
Equipped with appendages at both ends of the body, a caterpillar clasps with its front legs and draws up the hind end, then clasps with the hind end (prolegs) and reaches out for a new front attachment – creating the impression that it measures its journey. The caterpillars are accordingly called “loopers”, “spanworms”, or “inchworms” after their characteristic looping gait.