Abstract
Phalloceros spiloura Lucinda, 2008 is known from the coastal drainages of Rio Grande do Sul and Santa Catarina States, Iguaçu and Uruguai river basins. Its geographic distribution is herein extended to a new basin, the Laguna dos Patos system, an isolated costal drainage from Southern Brazil.
Highlights
Phalloceros species are small viviparous poecilids, being omnivorous, herbivorous, and detritivorous and commonly found in areas with reduced riparian vegetation (Teixeira 1989; Oliveira and Bennemann 2005; Gomiero and Braga 2008; Mazzoni et al 2010; Bonato et al 2012)
Phalloceros spiloura Lucinda, 2008 is diagnosed from its congeners by the following autapomorphies: a rounded spot located on the lower half of the caudal peduncle close to the base of the lowest caudal-fin rays, a patch of dark pigmentation on the last anal-fin ray of females, and the halves of gonopodial paired appendix straight and perpendicular to ray 3 (Lucinda 2008)
In the non-type material of Phalloceros spiloura Lucinda (2008) cited a single record for upper Uruguai river basin, which is not mentioned in the “distribution” section
Summary
Phalloceros species are small viviparous poecilids, being omnivorous, herbivorous, and detritivorous and commonly found in areas with reduced riparian vegetation (Teixeira 1989; Oliveira and Bennemann 2005; Gomiero and Braga 2008; Mazzoni et al 2010; Bonato et al 2012). Phalloceros spiloura Lucinda, 2008 is diagnosed from its congeners by the following autapomorphies: a rounded spot located on the lower half of the caudal peduncle close to the base of the lowest caudal-fin rays, a patch of dark pigmentation on the last anal-fin ray of females, and the halves of gonopodial paired appendix straight and perpendicular to ray 3 (Lucinda 2008).
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