Sunday, June 30, 2019

[Ichthyology • 2019] Leptonotus vincentae • A New Pipefish Species (Syngnathidae: Syngnathinae) from the south‐west Atlantic Ocean near northern Patagonia

Leptonotus vincentae
Luzzatto & Estalles, 2019

Patagonian Pipefish || DOI: 10.1111/jfb.14056 

A new species of pipefish Leptonotus vincentae sp. nov. (Syngnathidae) is described on the basis of 12 specimens found in shallow waters (<2 m depth) of San Antonio Bay, Patagonia, Argentina, in the south‐west Atlantic Ocean. The species is distinguished from congeners by the combination of: dorsal‐fin rays 30–33, pectoral‐fin rays 12–13, trunk rings 18–19, tail rings 43–46, subdorsal rings (2–4) + (5.5–8) = (8.5–10), head length 13–14% standard length, snout length 35–55% head length and snout depth 21–30% in snout length. Although this species has often been mistaken for Leptonotus blainvilleanus, most diagnostic characters of the two species differ. Both species are clearly distinguished by their snout length. L. blainvilleanus has a relatively longer snout than L. vincentae sp. nov. The new species is similar to a south‐west Pacific species, Leptonotus elevatus. However, L. vincentae sp. nov. differs from this species in that it exhibits a lower number of dorsal‐fin rays and a relatively longer head.

Keywords: Atlantic Ocean, Leptonotus blainvilleanus, new species, San Antonio Bay, sexual dimorphism, Syngnathiformes

Leptonotus vincentae sp. nov. 

Etymology: The species is named after Amanda Vincent, whose work on conservation of syngnathids has increased our chances of having healthy populations of these fishes in the threatened seas of the world.
English: Patagonian Pipefish; 
Spanish (Argentina): pez aguja patagónico; 
Spanish (Spain): pez pipa patagónico.

Diego C. Luzzatto and María L. Estalles. 2019. Leptonotus vincentae, A New Pipefish Species (Syngnathidae: Syngnathinae) from the south‐west Atlantic Ocean near northern Patagonia. Journal of Fish Biology. DOI: 10.1111/jfb.14056  

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