We don’t know which geometer moth this is. There are very faint lines running across all of the wings. Geometer moths come in many colors and are identified by their shape. I usually find geometer moths or sphinx moths here and in New Hampshire. Geometer moth larvae are called measuringworms, inchworms, loopers and spanworms. "Geometer" refers to the measuring way the larvae move — it looks like they are measuring things as they loop when they move. Looping describes the motion inchworms make of bringing their rear parts up to meet their front parts and then moving their front parts out forward.. Geometers are found all over the world.
We found this moth as we left the Willoughby Bog on July 31, 2010, in Westmore, Vermont.