In Europe Lumbricus terrestris it is the largest naturally occurring species of earthworm, typically reaching 20 – 25 cm in length when extended (though in parts of southern Europe, the native species are much larger). In September 2012, a specimen was found in SW China measuring roughly 50 cm in length. In May 2016 a worm was found that was about 61cm long. It has an unusual habit of copulating on the surface at night, which makes it more visible than most other earthworms.

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