Wriggler

(n.) One who, or that which, wriggles.

Thesaurus Entries

arachnid, arthropod, aurelia, beetle, bug, centipede, chilopod, chrysalis, cocoon, daddy longlegs, diplopod, fly, grub, harvestman, hexapod, insect, larva, maggot, millepede, millipede, mite, nymph, nympha, pupa, scorpion, spider, tarantula, tick, wiggler, wriggler