Macroinvertebrate Key Oligochaeta

Key to Macroinvertebrate Life in Ponds and Rivers in Utah

Aquatic worms belong in the class Oligochaeta. 

Common Name Picture Description Habitat
Segmented worms

<5 cm in length (but can reach up to 10 cm)

Oligochaeta have symmetrical, segmented, bodies with zero to four bundles of chaetae (chitinous bristles) on every segment.

Found in all aquatic environments, can survive very low oxygen conditions

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