Austrolebias Costa 1998
Creators: name: Alonso, Felipe
name: Terán, Guillermo Enrique
name: Alanís, Wilson Sebastián Serra
name: Calviño, Pablo
name: Montes, Martin Miguel
name: García, Ignacio Daniel
name: Barneche, Jorge Adrián
name: Almirón, Adriana
name: Ciotek, Liliana
name: Giorgis, Pablo
name: Cascioưa, Jorge
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Cyprinodontiformes
Rivulidae
Austrolebias

description: Dichotomous key to Austrolebias genus group genera
1a. More than 40 scales in longitudinal series ............................................................................................................................ Titanolebias
1b. Forty or fewer scales in longitudinal series .............................................................................................................................................. 2
2a. In males, presence of iridescent spots longitudinally aligned and usually confluent on the subdistal area of the dorsal fin; presence of iridescent spots on distal portion of pectoral fins ............................................................................................. Argolebias
2b. In males, absence of iridescent spots longitudinally aligned and usually confluent on the subdistal area of the dorsal fin; absence of iridescent spots on distal portion of pectoral fins .............................................................................................................. 3
3a. Suborbital bar absent or inconspicuous and diffuse; preopercular region not covered by scales … Gymnolebias
3b. Suborbital bar present and conspicuously marked; preopercular region not covered by scales (occasionally absent in Acantholebias quirogai) ................................................................................................................................................................................. 4
4a. In males, basal and medial region of pectoral fins hyaline .................................................................................................................... 5
4b. In males, basal and medial region of pectoral fins not hyaline ............................................................................................................. 7
5a. Flanks of males with regular grey vertical bands on anterior half merging and disappearing towards posterior half ................. ........................................................................................................................................................................................................ Amatolebias
5b. Flanks of males without regular grey vertical bands on anterior half merging and disappearing towards posterior half ........... ........................................................................................................................................................................................................................... 6
6a. In males, urogenital papilla fused to the first anal fin ray or, if not, presence of contact organs in the anal fin ............................. ........................................................................................................................................................................................................ Austrolebias
6b. In males, urogenital papilla not fused to the first anal fin ray or, if fused, absence of contact organs in the anal fin ................... ....................................................................................................................................................................................................... Garcialebias
7a. Subocular bar directed backwards; presence of scales on anterior rostral region of head ............................................ Megalebias
7b. Subocular bar not directed backwards; absence of scales on anterior rostral region of head ........................................................ 8
8a. Presence of ossified contact organs in the anal fin of males ........................................................................................... Acantholebias
8b. Absence of ossified contact organs in the anal fin of males .................................................................................................................. 9
9a. Male pectoral fins not greyish .................................................................................................................................................... Matilebias
9b. Male pectoral fins greyish ........................................................................................................................................................................ 10
10a. Flanks of males with vertical bands ........................................................................................................................................... Acrolebias
10b. Flanks of males without vertical bands ................................................................................................................................. Cypholebias
description: Published as part of Alonso, Felipe, Terán, Guillermo Enrique, Alanís, Wilson Sebastián Serra, Calviño, Pablo, Montes, Martin Miguel, García, Ignacio Daniel, Barneche, Jorge Adrián, Almirón, Adriana, Ciotek, Liliana, Giorgis, Pablo & Cascioưa, Jorge, 2023, From the mud to the tree: phylogeny of Austrolebias killifishes, new generic structure and description of a new species (Cyprinodontiformes: Rivulidae), pp. 280-309 in Zoological Journal of the Linnean Society 199 (1) on pages 292-293, DOI: 10.1093/zoolinnean/zlad032, http://zenodo.org/record/8326346