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Earthworms

Earthworms

Earthworms are the world's unsung heros. They loosen and mix up the soil, break down and recycle decaying plant matter and fertilise the soil by bringing nutrients closer to the surface. Birds often rely upon worms as a primary source of food. Because earthworms breathe through their skin, they have to come to the surface when it rains or risk drowning. Famously hermaphroditic, earthworms are both male and female in one body, though it still takes two worms to reproduce. Earthworms range in length from a tiny one millimetre to a massive three metres.

Scientific name: Lumbricidae

Rank: Family

Common names:

Lumbricid earthworms

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Additional data source: Animal Diversity Web

About

The Lumbricidae are a family of earthworms which includes most of the earthworm species well-known to Europeans. About 33 lumbricid species have become naturalized around the world, but the bulk of the species are in the Holarctic region: from Canada (e.g. Bimastos lawrenceae on Vancouver Island) and the United States (e.g. Eisenoides carolinensis, Eisenoides lonnbergi and most Bimastos spp.) and throughout Eurasia to Japan (e.g. Eisenia japonica, E. koreana and Helodrilus hachiojii). An enigmatic species in Tasmania is Eophila eti. Currently, 670 valid species and subspecies in about 42 genera are recognized.

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Classification

  1. Life
  2. Animals
  3. Segmented worms
  4. Clitellata
  5. Haplotaxida
  6. Earthworms

BBC News about Earthworms

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