The larvae of the ant Camponotus floridanus, have bodies that are covered with curly hairs. When larvae contact each other, their hairs interlock causing the larvae to clump. The hairs also allow the larvae to avoid drowning. Camponotus larvae will float in a droplet of water that would drown larvae such as a Drosophila that lack dense hairs. Locking hairs improve the ability of larvae to float by maintaining a clumped unit. Clumping may also facilitate feeding and care by adult workers.
Wang, Y., et al., Cuticular body hairs mediate clumping of small Camponotus floridanus larvae, Arthropod Structure & Development (2016)