Arctonoe
Arctonoe is a genus of worms belonging to the family Polynoidae. They are commonly known as "scale worms". Members of this genus predominantly occur in shallow (50 metres or less) waters of the northeast Pacific Ocean and often live as commensals of other marine invertebrates, frequently echinoderms but sometimes molluscs or other polychaetes.[1]
| Arctonoe | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Clade: | Pleistoannelida |
| Subclass: | Errantia |
| Order: | Phyllodocida |
| Family: | Polynoidae |
| Genus: | Arctonoe Chamberlin, 1920 |
| Type species | |
| Arctonoe lia Chamberlin, 1920 | |
Description
Arctonoe have long bodies, with 100 or more segments and numerous pairs of smooth translucent scales (elytra) on several of the segments. The first segment (prostomium), which contains the mouth, is rounded and smooth; on its side it has antennae pointing away from the body. Parapodia are found along the body with both dorsal (notopodial) and ventral (neuropodial) acicula penetrating epidermis. The notochaetae are few in number and more slender than the neurochaetae both notochaetae and neurochaetae have minutely notched tips (see Hanley, 1989 for detailed diagnosis).[1]
Species
The following species of Arctonoe are recognised as valid as of June 2020:[2]
- Arctonoe fragilis (Baird, 1863)
- Arctonoe pulchra (Johnson, 1897)
- Arctonoe vittata (Grube, 1855)
References
- Hanley, J. R. (1989). "Revision of the scaleworm genera Arctonoe Chamberlin and Gastrolepidia Schmarda (Polychaeta, Polynoidae) with the erection of a new subfamily Arctonoinae". The Beagle, Records of the Northern Territory Museum of Arts and Sciences. 6: 1–34.
- Read, Geoffrey B.; Fauchald, Kristian (2020). "The World Polychaeta Database".