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New records of Atlantic Hippolyte, with the description of two new species, and a key to all Atlantic and Mediterranean species (Crustacea, Decapoda, Caridea)
d'Udekem d'Acoz, C. (2007). New records of Atlantic Hippolyte, with the description of two new species, and a key to all Atlantic and Mediterranean species (Crustacea, Decapoda, Caridea). Zoosystema 29(1): 183-207
In: Zoosystema. Editions scientifiques du Muséum: Paris. ISSN 1280-9551; e-ISSN 1638-9387, meer
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Author keywords
    Crustacea; Decapoda; Caridea; Hippolyte; idnetification key; Atlantic;commensal; gorgonian; crinoid; new species
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  • d'Udekem d'Acoz, C., meer
Abstract
    Hippolyte longiallex n. sp. is described after specimens from Principe and Sao Tome islands (West Africa). This species, which is the smallest of the genus Hippolyte Leach, 1814, is very similar to the West Indian species H. nicholsoni Chace, 1972. In H. longiallex n. sp., the third to fifth pereiopods have longer dactyli with longer spines on the flexor border than in H. nicholsoni. Both H. longiallex n. sp. and H. nicholsoni are gorgonian associates. Hippolyte catagrapha n. sp. is described after specimens from South Africa (False Bay). It is very similar to the European species Hippolyte leptometrae Ledoyer, 1969, both species being crinoid associates. Hippolyte leptometrae has two dorsal teeth: one median and one subdistal. Hippolyte catagrapha n. sp. has only one median dorsal tooth. Hippolyte leptometrae is recorded for the second time in the Bay of Biscay and illustrations of an Atlantic specimen are given for the first time. A putative new species close to H. varians Leach, 1814 and H. kraussiana (Stimpson, 1860) is recorded from Principe and Sao Tome islands but it is not named because the available material is insufficient. Its rostrum has three dorsal teeth and the sixth segment of its pleon is very slender. Hippolyte varians is recorded for the first time in the area Of Tromso, northern Norway. An identification key is provided for all Hippolyte species from the Atlantic Ocean, the Mediterranean Sea and neighbouring areas.
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