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Braga cigarra comb. nov. for Philostomella cigarra (Crustacea: Isopoda: Cymothoidae) with a redescription of the species based on specimens from Galeocharax kneri, a freshwater fish of Minas Gerais State, Brazil

By Vernon E. Thatcher, Antonio A. N. de Oliveira and Adriana M. Garcia

Abstract

Specimens of a cymothoid isopod from a freshwater fish of Minas Gerais State were studied. These were found to be morphologically comparable to Philostomella cigarra Szidat & Schubart, 1960, except for having multilaminate pleopods which is the distinguishing characteristic of the genus Braga Schiödte & Meinert, 1881. The first pleopod is bilaminate while the second is quadrilaminate. Pleopods three to five are trilaminate. It is herein proposed that the generic name Philostomella Szidat & Schubart, 1960, should be considered invalid and that the species P. cigarra should be transferred to Braga. Braga now contains eight species, including B. cigarra comb. nov., all from South American freshwater fishes. The principal difference between this species and the others in the genus is the form of the female which has a narrow pleon and a small pleotelson. A redescription of this species is presented here because previous descriptions in the literature are inaccurate or incomplete

Topics: Cymothoid, freshwater fish parasite, South America, Zoology, QL1-991, Science, Q, DOAJ:Zoology, DOAJ:Biology, DOAJ:Biology and Life Sciences
Publisher: Sociedade Brasileira de Zoologia
Year: 2009
DOI identifier: 10.1590/S1984-46702009000100021
OAI identifier: oai:doaj.org/article:488fadea4273495c85f4df870fd1c275
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