fireworm
(noun)
noun
1. The larva of any of several tortricid moths (Tortricidae).
2. The larva of a small tortricid moth that feeds on cranberry leaves, giving the plant a burnt look; the cranberry worm.
3. The bearded fireworm, Chloeia flava, a species of polychaete, in family Amphinomidae, which may cause pain if touched.