Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Diapoma guarani comb.nov. from Hyphessobrycon

Diapoma guarani - original description
Diapoma guarani (photo from original description)

new combination:
Diapoma guarani (Mahnert & Géry, 1987)
from Hyphessobrycon

published in:
Thomaz, A.T., D. Arcila, G. Ortí & L.R. Malabarba (2015):
Molecular phylogeny of the subfamily Stevardiinae Gill, 1858 (Characiformes: Characidae): classification and the evolution of reproductive traits.
BMC Evolutionary Biology 15 (146): 1-25
Additional file 5: New Stevardiinae classification based on phylogenetic relationships.

abstract (from publication):
Background: The subfamily Stevardiinae is a diverse and widely distributed clade of freshwater fishes from South and Central America, commonly known as “tetras” (Characidae). The group was named “clade A” when first proposed as a monophyletic unit of Characidae and later designated as a subfamily. Stevardiinae includes 48 genera and around 310 valid species with many species presenting inseminating reproductive strategy. No global hypothesis of relationships is available for this group and currently many genera are listed as incertae sedis or are suspected to be non-monophyletic.
Results: We present a molecular phylogeny with the largest number of stevardiine species analyzed so far, including 355 samples representing 153 putative species distributed in 32 genera, to test the group’s monophyly and internal relationships. The phylogeny was inferred using DNA sequence data from seven gene fragments (mtDNA: 12S, 16S and COI; nuclear: RAG1, RAG2, MYH6 and PTR). The results support the Stevardiinae as a monophyletic group and a detailed hypothesis of the internal relationships for this subfamily.
Conclusions: A revised classification based on the molecular phylogeny is proposed that includes seven tribes and also defines monophyletic genera, including a resurrected genus Eretmobrycon, and new definitions for Diapoma, Hemibrycon, Bryconamericus sensu stricto, and Knodus sensu stricto, placing some small genera as junior synonyms. Inseminating species are distributed in several clades suggesting that reproductive strategy is evolutionarily labile in this group of fishes.


Downloads:
Thomaz et al (2015) Stevardiinae - supplement 5 [119 KB]
CLOFFUY - update 3

Oligosarcus hepsetus - not a species from Argentina or Uruguay

Moenkhausia forestii - first record from Argentina

Moenkhausia sanctaefilomenae - not a species from Argentina

Moenkhausia australis - confirmed for Argentina

Andromakhe gen.nov. - 5 comb.nov from Astyanax

Psalidodon - 30 comb.nov. from Astyanax

Psalidodon anisitsi comb.nov. from Hyphessobrycon

Deuterodon luetkenii comb.nov. from Hyphessobrycon

Deuterodon taeniatus comb.nov. from Astyanax

Hypostomus roseopunctatus - first record from Argentina

Megaleporinus piavussu - first record from Argentina

Corydoras longipinnis - first record from Uruguay

Hoplias argentinensis - first record from Uruguay

Odontesthes argentinensis - first record from freshwaters in Argentina

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