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Issue: Vol. 4442 No. 1: 29 Jun. 2018
Type: Article
Published: 2018-06-29
DOI: 10.11646/zootaxa.4442.1.7
Page range: 137–152
Abstract views: 51
PDF downloaded: 2

Integrative taxonomy of Hemimycale (Hymedesmiidae: Poecilosclerida: Demospongiae) from Southeastern Brazil, with the description of two new species

Departamento de Zoologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro. Rua São Francisco Xavier, 524—PHLC–5º andar, sala 520. 20550-013 Rio de Janeiro, RJ, Brazil.
Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista, s/no, São Cristóvão. 20940-040 Rio de Janeiro, RJ, Brazil.
Departamento de Bioquímica, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro. Boulevard Vinte e Oito de Setembro, 87, fundos, 4º andar, 20551-013 Rio de Janeiro, RJ, Brazil.
Departamento de Bioquímica, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro. Boulevard Vinte e Oito de Setembro, 87, fundos, 4º andar, 20551-013 Rio de Janeiro, RJ, Brazil.
Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro. Quinta da Boa Vista, s/no, São Cristóvão. 20940-040 Rio de Janeiro, RJ, Brazil.
Departamento de Zoologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro. Rua São Francisco Xavier, 524—PHLC–5º andar, sala 520. 20550-013 Rio de Janeiro, RJ, Brazil.
Porifera areolated pore sieves genetic diversity marine biodiversity rocky coasts Southeast Brazil 18S rRNA COI

Abstract

Two new species of Hemimycale from Southeastern Brazil are described in this study with the use of morphological and molecular data. Hemimycale oxeata sp. nov. is orange salmon colored in life and has unique oxeote like tornote spicules in addition to the typical (subtylo-)strongyles of the genus. Hemimycale ceadensis sp. nov. is reddish orange in life and has raised, tiny pore sieves, and subtylostrongyles with asymmetrical ends and raphides as microscleres. The diagnosis of the genus Hemimycale was slightly modified for the inclusion of the new species. Maximum-Likelihood analyses of 18S rRNA and COI sequences resulted in the clustering of both new species with the type species of the genus, thus confirming our morphological identification. The value of anatomical characters of pore sieves for diagnosing species and the genus is discussed. A key for species identification is also furnished.

 

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