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Six new species of Hesionura (Phyllodocidae, Annelida) and redescription of H. laubieri (Hartmann-Schröder, 1963) from southern and south-eastern Brazil

Published online by Cambridge University Press:  03 October 2016

Verônica de Oliveira ,
Danny Eibye-Jacobsen  and
Paulo Lana
Verônica de Oliveira*
Affiliation:
Centro de Estudos do Mar - Universidade Federal do Paraná, Av. Beira-Mar s/n, CP 61, CEP 83255-976, Pontal do Sul, Paraná, Brazil
Danny Eibye-Jacobsen
Affiliation:
Zoological Museum, Natural History Museum of Denmark, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark
Paulo Lana
Affiliation:
Centro de Estudos do Mar - Universidade Federal do Paraná, Av. Beira-Mar s/n, CP 61, CEP 83255-976, Pontal do Sul, Paraná, Brazil
*
Correspondence should be addressed to:V. de OliveiraCentro de Estudos do Mar - Universidade Federal do Paraná, Av. Beira-Mar s/n, CP 61, CEP 83255-976, Pontal do Sul, Paraná, Brazil email: [email protected]
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Abstract

Six new species of Hesionura are described from estuarine and continental shelf bottoms off southern and south-eastern Brazil. Hesionura laubieri (Hartmann-Schröder, 1963) is redescribed based on newly collected material. Hesionura ceciliae sp. nov. is diagnosed by conical ventral cirri on anterior and median segments, with tapered distal ends, and by four bidentate chaetae throughout the body, except in the last segments, which have an additional supracicular unidentate chaeta. The ventral cirri on median parapodia of Hesionura biformata sp. nov. are more than 1.5 times as long as the neuropodial lobes, abruptly tapering on posterior segments; posterior parapodia have one bidentate and two unidentate subacicular chaetae. Hesionura variodentata sp. nov. has conical tentacular ventral cirri, anterior and median parapodia with first dorsal chaeta tridentate and the other three bidentate, and posterior parapodia with four chaetae, the three most dorsal bidentate and the most ventral unidentate. The ventral tentacular cirri of Hesionura carioca sp. nov. are cylindrical and elongated, with tapered distal ends; dorsal cirri are oval, and posterior parapodia have one tridentate, three bidentate and one unidentate chaetae. Adults of Hesionura longissima sp. nov. reach up to 21 mm, a length not previously been reported for the otherwise meiofaunal genus Hesionura; their first supracicular chaeta is quadridentate and dorsal and ventral cirri are rounded in reproductive stages. Hesionura lupina sp. nov. has cylindrical and elongated ventral tentacular cirri, with tapered distal ends, oval dorsal cirri, cylindrical ventral cirri, and posterior parapodia with five bidentate chaetae.

Keywords

PhyllodocidaeHesionuraBrazil
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 98 , Special Issue 1: Special Section: European Marine Biology Symposium Papers 2016 , February 2018 , pp. 191 - 214
Copyright
Copyright © Marine Biological Association of the United Kingdom 2016 

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