inchworm

A caterpillar of a geometrid moth that moves by looping the body in alternate contractions and expansions.

A dropworm or measuring-worm. See looper.

The larva of any geometrid moth. It progresses forward by first bringing the rear end of the body forward, forming a loop, then moving the front part of the body; called also measuring worm, measuringworm, spanner, and looper. See geometrid.

The larva of a moth of the family Geometridae.

small hairless caterpillar having legs on only its front and rear segments; mostly larvae of moths of the family Geometridae