Abstract
A new species of Cirolana is described from the Northeast Brazilian coast based on the material previously recorded as Cirolana palifrons and some other material misidentified as C. parva. The new species, C. lemoscastroi sp. nov., belongs to a group of species within the genus that have two dorsal longitudinal carinae on the pleotelson. A key to all Cirolana species recorded from Brazil is provided.
Highlights
The Cirolanidae are worldwide distributed isopods, including marine, estuarine and some freshwater species
Only five species had been recorded from coast of Brazil, Cirolana (Anopsilana) browni (Van Name, 1936), C. minuta Hansen, 1890, C. (A.) jonesi (Kensley, 1987), C. palifrons Barnard, 1920 and C. parva Hansen, 1890
Koening (1972) recorded C. parva, originally described from the Caribbean Sea, c Published by Brazilian Crustacean Society, Ribeirão Preto, Brazil - December 2014 from the States Amapá to Espírito Santo
Summary
The Cirolanidae are worldwide distributed isopods, including marine, estuarine and some freshwater species. Koening (1972) recorded C. parva, originally described from the Caribbean Sea, c Published by Brazilian Crustacean Society, Ribeirão Preto, Brazil - December 2014 from the States Amapá to Espírito Santo. In both records, the authors did not provide any illustration of the examined material. Cirolana palifrons, originally described from South Africa, was recorded from the coast Bahia and Espírito Santo by Lemos de Castro and Lima (1976) These authors found some differences between the Brazilian specimens and Barnard’s (1920) description (e.g. antenna length and shape of rostrum), but this record constitutes an extralimital distribution, they considered the differences only as morphological variations. After new evaluation of these collections and with additional material from other localities along the Brazilian Coast, we observed two important points: (a) all the specimens identified as C. palifrons, including the specimens studied by Lemos de Castro and Lima (1976); and, (b) some lots identified as C. parva belong to a new species of Cirolana described in this paper
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