- Oligochaeta, class Oligochaeta - earthworms
--1 is a kind of class
--1 is a member of Annelida, phylum Annelida
--1 has members:oligochaete, oligochaete worm; earthworm, angleworm, fishworm, fishing worm, wiggler, nightwalker, nightcrawler, crawler, dew worm, red worm; Branchiobdellidae, family Branchiobdellidae