New species of Jenynsia (Teleostei: Cyprinodontiformes) from southern Brazil and its phylogenetic relationships
A new species of Jenynsia from southern Brazil is described. Jenynsia weitzmani n. sp. from the rio Pinheiros drainage in Santa Catarina state is diagnosed by a single dark midlateral stripe, absence of associated dark dorsolateral or ventrolateral stripes or blotches in adults, a terminal to slightly oblique mouth, and absence of the first mandibular-canal pore (pore W). A phylogenetic analysis of primarily osteological data supported the new species as sister to a group composed of J. eirmostigma and J. eigenmanni within the subgenus Plesiojenynsia. A key to Jenynsia species is provided.
Ghedotti, M. J.; Meisner, A. D.; and Lucinda, P. H.F., "New species of Jenynsia (Teleostei: Cyprinodontiformes) from southern Brazil and its phylogenetic relationships" (2001). Regis University Faculty Publications. 1216.