Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Pyrrhulina brevis and P. melanostoma are not from Argentina

Pyrrhulina brevis Steindachner, 1876
P. melanostoma (Cope, 1870)
most probably are not species from Argentina.

In López et al. 2003 both species are listed as valid and from Argentina.

published in:
Zarske, A. & J. Gery (2004):
Zur Variabilität von Pyrrhulina australis Eigenmann & Kennedy, 1903 (Teleostei: Characiformes: Lebiasinidae).
Zoologische Abhandlungen des Staatlichen Museums für Tierkunde, Dresden 54: 39-54

exstract from publication (free translation from German by Stefan Körber):
Besides the species discussed in this work, Ringuelet et al. (1967) and Lopez et al. (2003) list two or three further species for Argentina: (1) Pyrrhulina brevis Steindachner, 1876…(2) P. laeta (Cope, 1872)…and (3) P. melanostoma (Cope, 1870). Distribution of these species, which originate from upper and central Amazonia, in southern South America is highly unprobable…
(1) Pyrrhulina brevis Steindachner, 1876. This record is based on a work of Perugia (1891), published prior to the description of P. australis Eigenmann & Kennedy, 1903. Hereby a wrong determination is more than probable. The type material of P. brevis in MNW consists of two species, both distributed far more north. …
(3) P. melanostoma (Cope, 1870). Lopez et al. (2003) quote Meinken (1937) as source for the record of P. melanostoma from Argentina. In this work P. melanostoma is not mentioned. Meinken (1937) refers to the two fishes…he worked on as “Pyrrhulina semifasciata Steindachner”. These two fishes are still deposited at ZMB 23833 and undoubtfully are specimens of P. australis

Pyrrhulina australis - Zarske & Gery (2004): Zur Variabilit├Ąt von Pyrrhulina australis [585 KB]
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