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Caridina Gueryi, a New Species of Freshwater Shrimp (Decapoda, Atyidae) from Santo Island, Vanuatu

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A new species of freshwater atyid shrimp, Caridina gueryi sp. nov. from Santo Island, Vanuatu, is described and illustrated herein. C. gueryi is similar to Caridina longirostris H. Milne Edwards, 1837, by its long rostrum, small eggs are of similar size, the termination of the telson in a posteromedian projection, the preanal carina with a distinct spine, and, in males, the appendix interna being clearly visible on the endopod of the first pleopod. However, both species can easily be distinguished as C. gueryi sp. nov. has a long stylocerite, always overreaching the basal segment of the antennular peduncle and lacks subapical teeth on the rostrum. Une nouvelle espèce de crevette d'eau douce atyidé, Caridina gueryi sp. nov. de l'île de Santo, Vanuatu, est décrite et illustrée ici. C. gueryi ressemble à C. longirostris H. Milne Edwards, 1837 par son long rostre, la taille petite de ses œufs, son telson se terminant par une dent subapicale, sa carène préanale avec une épine bien nette et son appendice interne bien visible sur l'endopode du premier pléopode chez le mâle. Elle diffère toutefois de cette espèce par un long stylocérite dépassant toujours l'article basal du pédoncule antennulaire et par l'absence de dents apicales sur le rostre.

Affiliations: 1: 96 rue de Richelieu, F-75002 Paris, France;, Email:; 2: Laboratoire d'Ichtyologie, Muséum national d'Histoire naturelle, DMPA, CP 026, 57, rue Cuvier, F-75231 Paris Cedex 05, France;, Email:; 3: Environment Unit, Private mail bag 063, Port Vila, Vanuatu;, Email:


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