| Amynthas japonicus | |
|---|---|
|  Scientific classification   | |
| Kingdom: | Animalia | 
| Phylum: | Annelida | 
| Clade: | Pleistoannelida | 
| Clade: | Sedentaria | 
| Class: | Clitellata | 
| Order: | Opisthopora | 
| Family: | Megascolecidae | 
| Genus: | Amynthas | 
| Species: | †A. japonicus  | 
| Binomial name | |
| †Amynthas japonicus (Horst, 1883)  | |
| Synonyms | |
Megascolex japonicus  | |
Megascolecidae earthworm Amynthas japonicus [2] is an extinct Japanese native probably collected from Nagasaki in the 1820s. [1] It was one of three native earthworms [3] featured in Dr P.F.B. von Siebold's extensive collection and recorded as one of Japan's earliest pheretimoid species. [4] It is now deemed extinct given that a 2018 Nagasaki expedition and earlier 1930s reports failed to locate it. [5] It is featured on The Recently Extinct Plants and Animals Database. [6]