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New Species and New Records of Endemic Freshwater Crabs from the Atlantic Forest in Southern Brazil (Anomura: Aeglidae)

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Abstract Two new species of freshwater anomurans, Aegla pomerana and Aegla muelleri (Decapoda: Anomura: Aeglidae), are described from the Itajaí River basin, the major basin of the Atlantic range, located in the northeastern part of the state of Santa Catarina, Brazil. The new taxa can be distinguished from their congeners based on both morphological and molecular evidence (the nuclear gene 28S, and the mitochondrial genes 12S, 16S, COI, and COII). Based on molecular data, A. pomerana has a phylogenetic relationship with A. leptodactyla, but morphologically these two species differ in several characters. Aegla muelleri is a member of the same clade as A. leptochela, but several morphological characters distinguish the two species. New records of occurrence of A. jarai and A. odebrechtii, which occur in the same hydrographic basin, are provided.

Affiliations: 1: Departamento de Zoologia, Instituto Biociências, Universidade Federal do Rio Grande do Sul, Av.Bento Gonçalves, 9500, 90501-970, Porto Alegre, RS, Brazil; 2: Instituto de Zoologia, Casilla 567, Universidad Austral de Chile, Valdivia, Chile; 3: CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661, Vairão, Portugal; 4: Universidade Federal de Lavras, Departamento de Biologia, Campus Universitário, 37200-000 Lavras, MG, Brazil; 5: Department of Biology, Brigham Young University, Provo UT 84602-5255, USA; 6: Departamento de Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil


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1. Bond-Buckup G. 2003 "Família Aeglidae" 21 116 In, Melo G. A. S. (ed.), Manual de identificação dos Crustacea Decapoda, de água doce do Brasil Editora Loyola São Paulo
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4. Boos H. Jr , Silva-Castiglioni D. , Schacht K. , Buckup L. , Bond-Buckup G. 2006 "Crescimento de Aegla jaraiBond-Buckup and Buckup (Crustacea, Anomura, Aeglidae)" Revista Brasileira de Zoologia Vol 23 490 496 [Crossref]
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6. Müller F. 1876 " Aegla odebrechtiin. sp" Jenaische Zeitschrift für Naturwissenschaft, n.s., Jena Vol 10 (3) 13 24
7. Pérez-Losada M. , Bond-Buckup G. , Jara C. G. , Crandall K. A. 2004 "Molecular systematics and biogeography of the southern South American fresh-water “crabs” Aegla(Decapoda: Anomura: Aeglidae) using multiple heuristic tree search approaches" Systematic Biology Vol 53 767 780 [Crossref]
8. Pérez-Losada M. , Bond-Buckup G. , Jara C. G. , Crandall K. A. 2009 "Conservation Assessment of Southern South American Freshwater Ecoregions on the Basis of the Distribution and Genetic Diversity of Crabs from the Genus Aegla " Conservation Biology Vol 23 692 702 [Crossref]
9. Ribeiro A. C. 2006 "Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin" Neotropical Ichthyology Vol 4 225 246 [Crossref]
10. Schmitt W. L. 1942 "The species of Aegla, endemic South American crustaceans" Proceedings of the United States National Museum Vol 91 431 524 [Crossref]

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