But for all practical purposes, the earthworm species that are usually found in home gardens have been relegated to eight key ones.
As with other earthworm species, Eisenia fetida is hermaphroditic.
Most common earthworm species, such as Lumbricus terrestris, which can often be dug up in the garden, are eminently suitable for freshwater fishing.
The Lumbricidae is a family of earthworms which includes most of the earthworm species well known to Europeans.
"Invasive earthworm species and nitrogen cycling in remnant forest patches."
Several common earthworm species are mostly parthenogenetic.
In spite of these difficulties, new earthworm species do turn up.
The giant Gippsland earthworm, Megascolides australis, is one of Australia's 1,000 native earthworm species.
However, only a limited number of earthworm species are capable of anterior regeneration.
The Lumbricidae are a family of earthworms which includes most of the earthworm species well-known to Europeans.