Amynthas tokioensis, the Asian jumping worm, is a species of earthworm in the family Megascolecidae. It is native to Japan and the Korean Peninsula. It is an invasive species in North America.
These worms engage in parthenogenetic reproduction."A guide to identifying the Asian earthworms Amynthas agrestis, Amynthas tokioensis, and Metaphire hilgendorfi" by Chih-Han Chang. Extracted from Asian pheretimoid earthworms in North America north of Mexico: An illustrated key to the genera Amynthas, Metaphire, Pithemera, and Polypheretima by C.-H. Chang and B. Snyder and K. Szlavecz. Zootaxa 4179 (3), 495–529. 2016. Accessed August 20, 2021.
Taxonomy This worm was first described by Frank Evers Beddard in 1892 as Perichaeta tokioensis.Beddard, F.E. (1892). On some Perichaetidae from Japan. Zoologische Jahrbücher. 6: 755-766 + Plate 32.
Conservation status The IUCN declared it as of Least Concern in 2018.
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