Euphrosinella Detinova, 1985

Neal, Lenka, Wiklund, Helena, Gunton, Laetitia M., Rabone, Muriel, Bribiesca-Contreras, Guadalupe, Dahlgren, Thomas G. & Glover, Adrian G., 2022, Abyssal fauna of polymetallic nodule exploration areas, eastern Clarion-Clipperton Zone, central Pacific Ocean: Amphinomidae and Euphrosinidae (Annelida, Amphinomida), ZooKeys 1137, pp. 33-74 : 33

Euphrosinella Detinova, 1985

Type species.

Euphrosine cirratoformis Averincev, 1972.

Diagnosis

(modified from Kudenov (1993)). Prostomium with five appendages, including median antenna, two lateral antennae and two palps. Eyes present or absent. Caruncle free from the body wall for most of its length. Ringent chaetae absent.

Remarks.

Genus Euphrosinella was established by Detinova (1985) to accommodate species originally described by Averincev (1972) as Euphrosine cirratoformis . She distinguished Euphrosinella from Euphrosine mainly on the bases of the presence of five (instead of three) prostomial appendages. Characters such as the extent of fusion of caruncle to body wall and the absence of ringent chaetae were also suggested by Detinova (1985) but questioned by Kudenov (1993). The genus currently contains only two valid species, both from the deep waters and/or Antarctic habitats. Euphrosinella cirratoformis is widely distributed in the Antarctic waters and was considered circumpolar ( Kudenov 1993), although recent molecular data suggest the presence of at least two distinct species ( Brasier et al. 2016). The second species, Euphrosinella paucibranchiata ( Hartman 1960) has been described from deep waters off California (Santa Cruz Basin, 1737 m depth) and has not been widely reported since.