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| Strianassa lerayi Anker, 2020 |
Abstract
A new laomediid genus, Strianassa gen. nov., is established to accommodate a new eastern Pacific species of mud-shrimp, Strianassa lerayi sp. nov. The holotype and single specimen of the new species was collected on a shallow subtidal flat at Isla Afuerita, Canales de Afuera, Coiba Archipelago, Panama. Strianassa gen. nov. appears to be most closely related to Axianassa Schmitt, 1924 and Heteroaxianassa Sakai, 2016, differing from both of them by the dorsal surface of the rostrum armed with teeth; the third maxilliped with an exopod and a set of setobranchs; and the epipodal complex of the fourth pereiopod including a small podobranch. In addition, Axianassa ngochoae Anker, 2010 and Heteroaxianassa heardi (Anker, 2011) are recorded for the first time from New Caledonia and Papua New Guinea, respectively, representing minor extensions of their previously known distributional ranges. The validity of Heteroaxianassa is discussed.
Keywords: Decapoda, Laomediidae, mud-shrimps, Axianassa, Heteroaxianassa, new genus, new species, East Pacific, West Pacific, Crustacea
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| Strianassa lerayi gen et sp. nov., holotype, male (cl 5.4 mm), FLMNH UF 53414, from Coiba Archipelago, Panama |
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| Strianassa lerayi gen et sp. nov., holotype, male (cl 5.4 mm), FLMNH UF 53414, from Coiba Archipelago, Panama —living individual |
Family Laomediidae Borradaile, 1903
Genus Strianassa gen. nov.
Etymology. The generic name combines the official abbreviation of the Smithsonian Tropical Research Institute / Instituto Smithsonian de Investigaciones Tropicales / STRI (Stri-) and the last six letters of the genus Axianassa (-anassa), a superficially similar and phylogenetically putatively closely related genus. Gender feminine.
Type species. Strianassa lerayi sp. nov., by monotypy and present designation. Distribution. Presently known only from the tropical eastern Pacific.
Strianassa lerayi sp. nov.
Etymology. The new species is named after the author’s friend and colleague, Dr. Matthieu Leray, for his invitation to participate in the highly successful expedition to the Coiba Archipelago in February 2019, during which
three new genera and one new species of decapod crustaceans were collected and described (Anker 2020a, 2020b,
2020c; present study).
Distribution. Presently known only from the type locality in the Coiba Archipelago, Pacific coast of Panama.
Arthur Anker. 2020. Strianassa lerayi gen. et sp. nov., A New Laomediid Mud-shrimp from the eastern Pacific, with New Records of Axianassa ngochoae Anker, 2010 and Heteroaxianassa heardi (Anker, 2011) in the western Pacific (Malacostraca: Decapoda: Gebiidea). Zootaxa. 4820(3); 523–539. DOI: 10.11646/zootaxa.4820.3.6
Strianassa lerayi Anker, New Shrimp Species From Panama’s Coiba National Park
