Ololygon Fitzinger, 1843,

Duellman, William E., Marion, Angela B. & Hedges, Blair, 2016, Phylogenetics, classification, and biogeography of the treefrogs (Amphibia: Anura: Arboranae), Zootaxa 4104 (1), pp. 1-109: 26-28

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Ololygon Fitzinger, 1843


Ololygon Fitzinger, 1843 

Ololygon Fitzinger, 1843: 31  . Type species: Hyla strigilata Spix, 1824  , by original designation.

Definition. Small to medium-sized frogs with slightly truncate discs on fingers and toes, webbing reduced between fingers and absent between Fingers I and II ( Figs. 10 AView FIGURE 10. A and B); venter immaculate, eggs deposited in streams or terrestrial bromeliads.

Content. Forty-six species: Ololygon agilis  * (Cruz & Peixoto), albicans* (Bokermann), alcatraz* (Lutz), angrensis* (Lutz), arduoa* (Peixoto), argyreornata* (Miranda-Ribeiro), ariadne* (Bokermann), aromothyella* (Faivovich), atrata* (Peixoto), aurata  * (Wied-Neuwied), belloni* (Faivovich, Gasparini & Haddad), berthae (Barrio)  , brieni* (De Witte), canastrensis* (Cardoso & Haddad), carnevallii * Caramaschi & Kisteumacher, catharinae (Boulenger)  , centralis  * (Pombal & Bastos), cosenzai* (Lacerda, Peixoto & Feio), faivovichi (Brasileiro, Oyamaguchi & Haddad)  , flavoguttata* (Lutz & Lutz), heyeri  * Peixoto & Weygoldt, hiemalis* (Haddad & Pombal), humilis* (Lutz & Lutz), insperata* (Silva & Alves-Silva), jureia* (Pombal & Gordo), kautskyi* Carvalho-e-Silva & Peixoto, littoralis* (Pombal & Gordo), littorea* Peixoto, longilinea* (Lutz), luizotavioi* Caramaschi & Kisteumacher, machadoi* (Bokermann & Sazima), melloi* Peixoto, muriciensis * (Cruz, Nunes & Lima), obtriangulata (Lutz)  , peixotoi (Brasileiro, Haddad, Sawaya & Martins)  , perpusilla (Lutz & Lutz)  , pombali * (Lourenço, Carvalho, Baêta, Pezzuti & Leite), ranki * (Andrade & Cardoso), rizibilis* (Bokermann), skaios * (Pombal, Carvalho, Canelos & Bastos), skuki * (Lima, Cruz & Azevedo), strigilata  * (Spix), trapicheiroi* (Lutz & Lutz), tripui* (Loureço, Nascimento & Pires), tupinamba* (Silva & Alves-Silva), and vsignata* (Lutz).

Distribution. Atlantic Coastal Forest of eastern Brazil, extending southward to northeastern Argentina and westward into gallery forests in the Brazilian Cerrado.

Etymology. The generic name is the Greek word, ololygon  meaning the croaking of a frog. The gender is feminine.

Remarks. Throughout its recent history, Ololygon  either encompassed the entire “ Hyla rubra  ” Group (Fouquette & Delahoussaye 1977) or was considered to be a synonym of Scinax  ( Duellman & Wiens 1992; Faivovich 2002; Pombal & Gordo 1991). The identity of Hyla strigilata Spix  , the type species of Ololygon  , was uncertain until Pimenta et al. (2007 a) discovered a population of frogs that fits the type description. Almeida and Cardoso (1985) suggested that the “ rubra  group” and “ catharinae  group” of Ololygon  should be in separate genera. This separation was evident in the cladistics analyses of Faivovich (2002) and Faivovich et al. (2005).

Even though we have molecular data for only 30 % of the species of Scinax  (sensu lato), three distinct major clades are evident in the tree ( Fig. 4View FIGURE 4). One of these recognized herein is Ololygon  that contains the species in the “ catharinae  clade,” as recognized by Faivovich (2002) and updated in Frost (2015). Faivovich (2002) and Faivovich et al. (2005) noted some myological and osteological differences between certain members of the “ catharinae  clade” (= Ololygon  ) and the “ rubra  clade” (= Scinax  ). However, the utility of these characters will be ascertained only after thorough comparisons of many more species in both genera.

Faivovich et al. (2005) recognized two groups of species in their “ catharinae  clade.” One of these is the “ perpusilla  ” group, first defined by Peixoto (1987). This group contains at least nine small species that breed in terrestrial bromeliads in coastal southeastern Brazil. Our tree contains three of these species that form a distinctive clade separate from the species in the “ catharinae  group,” which breed in streams.




Ololygon Fitzinger, 1843

Duellman, William E., Marion, Angela B. & Hedges, Blair 2016


Fitzinger 1843: 31

Hyla strigilata

Spix 1824