Abstract
Material recently collected from the Solomon Islands include three species of Acanthaxius Sakai & de Saint Laurent, 1989, two of which are new to science: A. clevai n. sp. and A. gadaletae n. sp. and a specimen of A. polyacantha Miyake & Sakai, 1967. Two specimens from New Caledonia are assigned to A. gadaletae n. sp. The new taxa are readily differentiated from A. polyacantha by their longer rostrum and the glabrous postcervical region of carapace. A. clevai n. sp. is characterized by a slender rostrum longer than the eyestalks, with two lateral and a suborbital spine, the gastric region with a median, submedian and lateral carina, setose pereopods 1 with three and two upper spines on the propodal palm and dactylus respectively, the telson longer than broad with three teeth and one spinule on the lateral border. A. gadaletae n. sp. is similar to A. clevai n. sp. but differs by the gastric region with two submedian carinae, the pereopod 1 with four upper spines both on the propodal palm and the dactylus, the maxilliped 3 basis with a large lower distal spine (absent in A. clevai n. sp.) and the abdominal pleura 3–5 with an anterior spinule (absent in A. clevai n. sp.).Trois espèces d’Acanthaxius Sakai & de Saint Laurent, 1989, dont deux nouvelles, des Iles Salomon et de Nouvelle Calédonie (Crustacea, Thalassinidea, Axiidae). Du matériel récemment récolté des Iles Salomon a permis d’identifier trois espèces d’Acanthaxius dont deux sont nouvelles : A. clevai n. sp., A. gadaletae n. sp. et un spécimen d’A. polyacantha Miyake & Sakai, 1967. Deux spécimens de Nouvelle Calédonie sont placés dans A. gadaletae n. sp. Les deux nouveaux taxa se distinguent aisément d’A. polyacantha par leur rostre plus long et la région postcervicale de la carapace inerme. A. clevai n. sp. se distingue par un rostre long et grêle avec deux épines latérales et une suborbitale, la région gastrique avec une carène médiane, une submédiane et une latérale, un péréiopode 1 pourvu de nombreuses soies et de trois et deux épines dorsales respectivement sur le paume et le dactyle, un telson plus long que large muni
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