| Eucranta | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Class: | Polychaeta |
| Order: | Phyllodocida |
| Family: | Polynoidae |
| Genus: | Eucranta Malmgren, 1865 |
| Type species | |
| Eucranta villosa Malmgren, 1865 | |
Eucranta is a genus of marine annelids in the family Polynoidae (scale worms). The genus includes 5 species which are globally distributed from depths of about 40 to 600 m, mostly from high latitudes in the northern and southern hemispheres. [1]
Body short, 39 segments, 16 pairs of elytra. Anterior margin of prostomium with a pair of acute anterior peaks. Lateral antennae inserted ventrally (beneath prostomium and median antenna). Palps, antennae, dorsal and ventral cirri with papillae. Notochaetae about as thick as neurochaetae. Unidentate and bidentate neurochaetae present.
Eucranta are short-bodied scale worms with 36 to 40 segments and 15 pairs of elytra. The prostomium is bilobed anteriorly and a pair of cephalic peaks is present. The lateral antennae are located ventrally, directly beneath the median antenna ceratophore. The neuropodial lobes are elongate. The notochaetae are distinctly thicker than the neurochaetae; both are ornamented with transverse rows of small spines. The neurochaetae may be unidentate or bidentate and distinctive furcate neurochae are present. [2]
The following species of Eucranta are recognised as of September 2020: [1]
Leucia is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Leucia contains 2 species, both found in the northern Atlantic Ocean. This genus is distinguished from the closely related genus Harmothoe by having sixteen pairs of elytra, as opposed to fifteen.
Leucia nivea is a species of polychaete worm, commonly known as a "scale worm", in the family Polynoidae. This species occurs in the northeastern Atlantic Ocean, the North Sea and the Mediterranean Sea.
Leucia violacea is a species of polychaete worm, commonly known as a "scale worm", in the family Polynoidae. This species occurs in the northeastern Atlantic Ocean.
Australonoe willani is a species of marine annelids in the family Polynoidae, and the sole member of the genus Australonoe, known only from the south-east Indian Ocean at Rottnest Island, Western Australia.
Eunoe yedoensis is a scale worm described from off Japan in the North Pacific Ocean at a depth of 641 m.
Eunoe oerstedi is a scale worm which is widely distributed in the Arctic Ocean, North Atlantic Ocean and North Pacific Ocean from shallow waters to depths of about 950m.
Eunoe senta is a scale worm described from Greenland, where it was collected by the Peary Relief Expedition in August 1892.
Eunoe spinulosa is a scale worm described from the North Atlantic Ocean off Nova Scotia.
Bathynoe is a genus of marine annelids in the family Polynoidae. The genus includes 6 species, 5 of which occur in the Pacific Ocean while one occurs in the Atlantic Ocean. Bathynoe species have been recorded from depths of about 500 – 3000 m.
Austrolaenilla is a genus of marine annelids in the family Polynoidae. The genus includes 10 species which are known from depths of about 20 m to over 5000 m and from the Atlantic Ocean, Southern Ocean and Antarctic Ocean.
Bylgides is a genus of marine annelids in the family Polynoidae. The genus contains 9 species, all found in the Northern Hemisphere and from shallow inshore waters to depths of about 5000 m.
Robertianella is a genus of marine annelids in the family Polynoidae. There are 2 species of Robertianella which are known from depths of about 600 to 3000 m in the north-east Atlantic Ocean and the Mediterranean Sea.
Hartmania is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Hartmania contains a single species, Hartmania moorei which is known from the north-west Atlantic Ocean off the coast of North America from shallow water to depths of about 80 m.
Tottonpolynoe is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Tottonpolynoe contains a single species, Tottonpolynoe symantipatharia. It is known from the South Pacific Ocean and Southern Ocean at depths of about 800 to 1,700 m.
Ysideria is a genus of marine polychaete worms belonging to the family Polynoidae, the scale worms. Ysideria contains a single species, Ysideria hastata which is known from the North Pacific Ocean off the coast of California at depths of about 50–60 m.
Verrucapelma is a genus of marine annelids in the family Polynoidae. Verrucapelma contains three species which are known from shallow water down to a depth of about 90 m. All three species occur in the Indo-Pacific region, in the Coral Sea, northern Australia and the Indonesian archipelago.
Verrucapelma nigricans is a scale worm known from the South China Sea from intertidal habitats.
Verrucapelma nigricans is a scale worm known from the South China Sea from intertidal habitats.
Gattyana treadwelli is a scale worm known from the north-west Pacific and Arctic Oceans from depths down to about 30 m.
Hermadionella is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Hermadionella contains 3 species which are known from the north-west Pacific and Arctic Oceans from the intertidal to depths of about 200 m.