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Issue: Vol. 2088 No. 1: 1 May. 2009
Type: Article
Published: 2009-05-01
DOI: 10.11646/zootaxa.2088.1.4
Page range: 31–40
Abstract views: 67
PDF downloaded: 2

Aegla manuinflata, a new species of freshwater anomuran (Decapoda: Anomura: Aeglidae) from Brazil, determined by morphological and molecular characters

Departamento de Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
Departamento de Zoologia, Universidade Federal do Rio Grande do Sul, 91510-970 Porto Alegre, Rio Grande do Sul, Brazil
CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Portugal
Departamento de Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
Departamento de Zoologia, Universidade Federal do Rio Grande do Sul, 91510-970 Porto Alegre, Rio Grande do Sul, Brazil
Crustacea Aeglidae Anomuran crab biogeography COII mtDNA sequence Uruguay basin

Abstract

A new species of freshwater anomuran, Aegla manuinflata n. sp. (Decapoda: Anomura: Aeglidae), is described from the Ibicuí River basin, a tributary of the Uruguay River, from the central region of the state of Rio Grande do Sul, Brazil. It can be distinguished from its congeners based on both morphological and molecular (mitochondrial gene — COII) evidence. Morphologically, the new species partly resembles A. inermis and A. uruguayana, but differs in having an inflated cheliped propodus and more elongated dactyls, besides other features. Our molecular results showed a high degree of genetic divergence between A. manuinflata and its sister group (composed of A. singularis, A. uruguayana, A. rossiana and A. platensis), an indication of species distinctness within the Aeglidae.

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