The inchworm (“inch worm”) is a type of caterpillar, and belongs to a family of moths called Geometridae, a group with over 1,200 species native to North America. Also called measuring worms, spanworms, loopers and cankerworms, inch worms are larvae, and are usually considered pests because of the damage they inflict on trees, plants and shrubs. Inch worms measure about 1 cm. in length, and can be pale green, reddish-green, dark brown or black. The head is pale to dark green, and is frequently covered with black spots. Pale lines run down the length of the body, and a dark stripe runs down the back. Inch worms have three pairs of “true legs” at the front of their bodies, and two or three pairs of prolegs (appendages extending from the abdomen) at the rear. They have no appendages at the middle, and move by drawing their rear ends forward while extending their front section and holding on with their prolegs. This little guy was inching his way up the side of my garage. This was taken in Rockaway, NJ USA with the Nikon D3100 and 86mm macro lens.