(Bate, 1856)

Description:
Body slender, covered with short hairs. Carapace short, subtruncate; front in female with a few stiff setae on either side on the rounded upper front corner, smoothly truncate in front down to the denticulate, slightly prominent upper edge of a slight excavation, the middle of which is occupied by a prominence with two or three small downward pointing teeth, while its lower edge is formed by an upward pointing tooth followed by some serrations on the lower edge; in the male the excavation is replaced by a smooth convexity with only a few teeth on the lower front edge.
Antenna 1 bent (geniculate) between the second and third segments. Distal segment of antenna 2 in female ill-defined. All the pereion segments are visible from above. Pleopods without an external process on the inner ramus, two pairs, rarely one or none, in male. Exopodites present on the third maxillipeds and on the first four pairs of pereiopods, rarely the first two pairs, in the male; in the female on the first three pairs, rarely the first two pairs. The mandibles are broadened at the base. There are no long setae on the hind border of pleonite 5. Peduncle of the uropods a little longer than the exopod, which is a little longer in the female or a little shorter in the adult male than the first segment of the endopod. The distal segment, including its terminal spine, is more than half as long as the proximal segment of the endopod in the female, less than half in the male.

Habitat:
Found on muddy sand substrates.

Size:
Up to 5 mm.

Depth range:
Usually <50 metres, but recorded from depths down to 550 metres.

Distribution in the North Sea:
Northern and southern North Sea, Skagerrak.

World distribution:
Boreal-Mediterranean species, found on both sides of the N Atlantic and in the Mediterranean; does not extend into the Arctic.

Phylum Arthropoda
Subphylum Crustacea
Class Malacostraca
Subclass Eumalacostraca
Superorder Peracarida
Order Cumacea
Family Leuconidae
Genus Eudorella
Species truncatula

Status in World Register of Marine Species

Accepted name: Eudorella truncatula (Bate, 1856)

Scientific synonyms and common names

Eudora truncatula Bate, 1856

Jones, N.S., 1957a. Cumacea. Key to families and references. Fiches d'Identification du Zooplancton, 71 (1957). Conseil International pour l'Exploration de la Mer, Kopenhagen.

Jones, N.S., 1957b. Cumacea. Figures (covering sheets 71 and 73-76). Fiches d'Identification du Zooplancton, 72 (1957). Conseil International pour l'Exploration de la Mer, Kopenhagen.

Jones, N.S., 1957d. Cumacea. Family: Leuconidae. Fiches d'Identification du Zooplancton, 74 (1957). Conseil International pour l'Exploration de la Mer, Kopenhagen.

Jones, N.S., 1976. British Cumaceans. Synopses of the British fauna (New Series), No. 7. The Linnean Society/Academic Press, London.

Sars, G.O., 1900. An account of the Crustacea of Norway. Vol. III. Cumacea. Bergen Museum, Bergen.

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