Collettea (G.O. Sars, 1882)

Larsen, Kim, 2011, Tanaidaceans (Crustacea) from the Central Pacific Manganese Nodule Province. I. The genera Collettea, Robustochelia and Tumidochelia, ZooKeys 87, pp. 19-41 : 20-21

Genus Collettea (G.O. Sars, 1882)

Type species.

Strongylura cylindrata (G.O. Sars, 1882).

Diagnosis.

(Modified after Larsen 2005) Female. Body almost completely cylindrical. Carapace longer than wide. Eye-lobes small but present, without visual el ements. Pleon and pleotelson not fused. Pleotelson mostly longer than last three free pleonites combined, terminating in dorsal plate covering uropods. Antennule with 4-5 (minute terminal article) articles. Antenna with 6-7 (fusion line) articles. Mandibles with small, but not pointed crushing area. Maxillule setal number varying, some setae may be bifurcate or setulose. Maxillipedal endites without inner distal setae. Maxilliped palp article 2 without multifurcate seta. Chelipeds attached via lateral sclerite. Pereopods slender, with coxae, and with dactylus and unguis not fused to hook. Pleopods absent in females. Uropods biramous; endopod with one or two articles; exopod uniarticulated.

Male. Similar to female. Functional mouthparts retained in adult. Antennule thicker than in female. Pleopods present, most often with simple setae.

Remarks.

Collettea is a genus well represented in all major oceans from less than 100 meters (G.O. Sars 1896) to abyssal depths exceeding 5000 meter ( Kudinova-Pasternak 1973; 1983). It is recognized by elongated pleotelson. The genus currently consists of 18 species including the one described herein.

Gender.

Feminine.

Species currently assigned to Collettea:

Collettea alicjae Błażewicz-Paszkowycz & Larsen, 2005; Collettea antarctica ( Vanhöffen, 1914); Collettea arnaudi (Shiino, 1978); Collettea cylindrata (G.O. Sars, 1882); Collettea cylindratoides Larsen, 2000, Collettea elongata Larsen, 2002, Collettea humbolti Larsen, 2000, Collettea larviformis (Kudinova-Pasternak, 1973); Collettea lilliputa Błażewicz-Paszkowycz & Larsen, 2005; Collettea longipedia Kudinova-Pasternak, 1986; Collettea longipleona Błażewicz-Paszkowycz & Larsen, 2005; Collettea longisetosa sp. n.; Collettea minima (Hansen, 1913); Collettea pegmata Bamber, 2000; Collettea rotundicauda Kudinova-Pasternak, 1983; Collettea subtilis Kudinova-Pasternak, 1981; Collettea vermiformis (Lang, 1971); Collettea wilsoni Larsen, 1999a