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Diplocardia meansi, the Means's giant earthworm, or Rich Mountain giant earthworm, is a species of earthworm endemic to the United States. It is the second longest earthworm in North America. It was discovered by D. Bruce Means on June 11, 1973, in Polk County, Arkansas. [1] and later described by Gates in 1977.
Microchaetus rappi, the African Giant Earthworm, is a large earthworm in the family Microchaetidae, the largest of the segmented worms (commonly called earthworms). It averages about 1.4 meters (4.5 feet) in length, but can reach a length of as much as 6.7 meters (22 feet) and can weigh over 1.5 kilograms (3.3 pounds).
Komarekiona eatoni, or the Kentucky earthworm, is a vulnerable species of nearctic Annelid. K. eatoni is found in the southwestern United States , especially near the Appalachian Mountains , though they range at least northwest to Illinois and northeast to Maryland .
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Lumbricus terrestris is a large, reddish worm species thought to be native to Western Europe, now widely distributed around the world (along with several other lumbricids). In some areas where it is an introduced species, some people consider it to be a significant pest for out-competing native worms. [1]
Up to 60 cm in length, this earthworm is one of the largest European species. [ 1 ] [ 2 ] It weighs between 25 and 35 g and lives in subterranean tubes which are up to 2.5 m deep. It feeds on organic matter it ingests from the surface and aerates the soil as it moves through it, contributing to the formation of humus .
Oligochaetes are well-segmented worms and most have a spacious body cavity (coelom) used as a hydroskeleton.They range in length from less than 0.5 mm (0.02 in) up to 2 to 3 metres (6.6 to 9.8 ft) in the 'giant' species such as the giant Gippsland earthworm (Megascolides australis) and the Mekong worm (Amynthas mekongianus).
The Oregon giant earthworm (Driloleirus macelfreshi) is one of the largest earthworms found in North America, growing to more than three feet (0.91 m) in length. First described in 1937, the species is not common. Since its discovery, specimens have been documented in only fifteen locations within Oregon's Willamette Valley.