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Haplotaxida
oligochaete order
Learn about this topic in these articles:
annotated classification
- In annelid: Annotated classification
Order Haplotaxida Chiefly aquatic worms; male gonopores in segment immediately behind testes; seminal receptacle at or near segment containing testes; size, minute to 1–3 cm; examples of genera: Nais, Tubifex (sludge worm). Class Hirudinea (leeches)
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