Amynthas tokioensis

Amynthas tokioensis
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Annelida
Clade:	Pleistoannelida
Clade:	Sedentaria
Class:	Clitellata
Order:	Opisthopora
Family:	Megascolecidae
Genus:	Amynthas
Species:	A. tokioensis
Binomial name
	Amynthas tokioensis; (Beddard, 1892)
Synonyms
	Amynthas boletiformis Hong & James, 2001; Amynthas eastoni Hong & James, 2001; Amynthas paiki Hong, 2001; Amynthas sonjaesiki Hong & James, 2009; Amynthas yongshilensis Hong & James, 2001; Perichaeta irregularis Goto & Hatai, 1899; Perichaeta levis Goto & Hatai, 1899; Perichaeta tokioensis Beddard, 1892; Pheretima parvicystis Goto & Hatai, 1899; Pheretima schizopora Goto & Hatai, 1898

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.^[2]^[3]

These worms engage in parthenogenetic reproduction.^[4]

Taxonomy

This worm was first described by Frank Evers Beddard in 1892 as Perichaeta tokioensis.^[5]^[6]

Conservation status

The IUCN declared it as of Least Concern in 2018.^[1]

References

^ ^a ^b ^c Blakemore, R.J. (2018). "Amynthas tokioensis. The IUCN Red List of Threatened Species 2018: e.T118818651A118839042". Retrieved 2025-11-17.
^ "Invasive jumping worms damage U.S. Soil and threaten forests". 29 September 2020.
^ Chang, Chih-Han; Johnston, Marie R.; Görres, Josef H.; Dávalos, Andrea; McHugh, Damhnait; Szlavecz, Katalin (2018). "Co-invasion of three Asian earthworms, Metaphire hilgendorfi, Amynthas agrestis and Amynthas tokioensis in the USA". Biological Invasions. 20 (4): 843–848. doi:10.1007/s10530-017-1607-x. S2CID 4518705.
^ "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.
^ "Catatogue of Life: Amynyhas tokioensis (Beddard, 1892)". catalogueoflife.org. Retrieved 2025-11-17.
^ Beddard, F.E. (1892). On some Perichaetidae from Japan. Zoologische Jahrbücher. 6: 755-766 [762]+ Plate 32. BHL page 10195358

[iucn-1] Blakemore, R.J. (2018). "Amynthas tokioensis. The IUCN Red List of Threatened Species 2018: e.T118818651A118839042". Retrieved 2025-11-17.

[2] "Invasive jumping worms damage U.S. Soil and threaten forests". 29 September 2020.

[3] Chang, Chih-Han; Johnston, Marie R.; Görres, Josef H.; Dávalos, Andrea; McHugh, Damhnait; Szlavecz, Katalin (2018). "Co-invasion of three Asian earthworms, Metaphire hilgendorfi, Amynthas agrestis and Amynthas tokioensis in the USA". Biological Invasions. 20 (4): 843–848. doi:10.1007/s10530-017-1607-x. S2CID 4518705.

[4] "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.

[5] "Catatogue of Life: Amynyhas tokioensis (Beddard, 1892)". catalogueoflife.org. Retrieved 2025-11-17.

[6] Beddard, F.E. (1892). On some Perichaetidae from Japan. Zoologische Jahrbücher. 6: 755-766 [762]+ Plate 32. BHL page 10195358

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