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| Alpheus ramosportoae Soledade, Terossi, Scioli, Mantelatto & Almeida, 2019 DOI: 10.5852/ejt.2019.581 |
Abstract
Alpheus macrocheles (Hailstone, 1835), a species originally described from the northeastern Atlantic, has been reported from Brazil based on material from the north and northeast coasts and Espírito Santo. However, a thorough morphological comparison between Brazilian material reported as A. macrocheles and eastern Atlantic material of A. macrocheles revealed consistent differences, suggesting that the Brazilian specimens belong to an undescribed species. Alpheus ramosportoae sp. nov. is therefore now described based on material from Amapá to Pernambuco, Brazil. Morphological differences between the new species and A. macrocheles s. str. were supported by the clear divergence of 16S rRNA gene sequences (18% of genetic distance), separating the species in two distinct clades. Differences in the color pattern also were observed and illustrated.
Keywords: alpheid; new species; South-West Atlantic; Brazil; 16S.
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| Alpheus ramosportoae sp. nov. from off Recife, state of Pernambuco, northeastern Brazil. A–C. Color pattern in life of the species. A. Body color pattern, lateral view. B. Coloration of major (mesial view) and minor (lateral view) chelipeds. C. Coloration of pleon, lateral view. D–F. Substrates where the specimens were obtained. D. Calcareous algae, sponges and sandy sediment clusters. E. External appearance of rhodolith fragments. F. Detail of a fragment of rhodolith broken in half, showing crevices from which specimens were retrieved. Scale bars: A–C = 1 mm; D–F = 2 cm. |
Alpheus ramosportoae sp. nov.
Guidomar O. Soledade, Mariana Terossi, Justin A. Scioli, Fernando Luis Mantelatto and Alexandre O. Almeida. 2019. A New Western Atlantic Snapping Shrimp of the Alpheus macrocheles group (Caridea, Alpheidae) revealed by Morphological, Molecular and Color Data. European Journal of Taxonomy. 581; 1–21. DOI: 10.5852/ejt.2019.581
