Nick Maclaren wrote:
[...]
Lumbricus rubellus is called both the redworm and earthworm, even
in the latter term's more restrictive sense, and are (as far as I
know) called tiger worms only by the less reputable sort of worm
farm salesman. The term "lobworm" is more often used nowadays for
the lugworm (Arenicola marina) than any Lumbricus, but used to be
used for the latter. Lumbricus terrestris was also called the
dew-worm or dew-crawler.

Really aggrethive wormth wear little helminth.

Mike.