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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).
Giant Palouse earthworm - A vulnerable North American species. Oregon giant earthworm - A relative of the Palouse earthworm. Specimens have been recorded at 1.3 m (4 feet) long. Lake Pedder earthworm - Listed as the first "extinct" worm species from its original unique Tasmanian habitat. Lumbricus badensis - Giant (Badish) earthworm.
The Mekong giant earthworm may grow to a length of up to 2.9 m (10 ft). [2] Compared to their great length, these worms are relatively slender. [3] The type specimen was one metre long and 8 mm (0.3 in) wide at the broadest point (segment 5). It had 370 segments and was a greyish colour, rather paler on the ventral surface.
The rate of growth during the first 14 days is very low, however; after 21 – 28 days, the rate of growth increases and then cycles up and down throughout the worm's life with no pattern. [16] The growth rate of these worms is correlated to the temperature of their environment. As temperatures increase from 30 °C, a significant growth rate ...
However, 'earthworm' can be a source of confusion since, in most of the world, other species are more typical. For example, through much of the unirrigated temperate areas of the world, the "common earthworm" is actually Aporrectodea (=Allolobophora) trapezoides, which in those areas is a similar size and dark colour to L. terrestris.
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The giant kidney worm (Dioctophyme renale; syn. Dioctophyma renale) is the largest known parasitic nematode and can infest the kidney and occasionally the abdominal cavity in dogs. Female worms reach lengths of over one meter by up to 12 mm in diameter; male worms measure 20 cm by 6–8 mm. Both sexes are blood red in color.
The giant Palouse earthworm or Washington giant earthworm (Driloleirus americanus, meaning lily-like worm [2]) is a species of earthworm belonging to the genus Driloleirus inhabiting the Palouse region of Eastern Washington and North Idaho, in the United States. The worm was discovered in 1897 by Frank Smith near Pullman, Washington. It can ...