A new species of the Ololygon catharinae species group (Anura: Hylidae) from the Cerrado biome, State of Goiás, Central Brazil

Abstract

We describe a new species of Ololygon from the Cerrado biome, Central Brazil. The new species is assigned to the Ololygon catharinae species group based in morphological attributes. Ololygon goya sp. nov. in known only from type locality—Sítio d’Abadia municipality, State of Goiás—and associated with riparian environments connected to seasonal dry forest on the banks of the Corrente river, a tributary of the Paranã river basin. The new species is characterized by the combination of the following characters: medium size (24.4–38.8 mm SVL); snout subovoid in dorsal view; canthus rostralis well defined; males with hypertrophied forearms and nuptial pads; inguinal region and hidden surfaces of thigh with irregular dark brown spots on pale yellowish background. We also describe the external morphology and oral morphology of tadpoles, and the advertisement calls of the new species.

A neotype for Hyla x-signata Spix, 1824 (Amphibia, Anura, Hylidae)

“…Histological studies are necessary to corroborate our observations. Otherwise, glandular acini in the pectoral region were reported for S. goya (the S. catharinae Clade; Andrade et al, 2018). These acini seem to be scattered throughout this region and likely not form a delimited area; it is unclear if these acini are sexually dimorphic in S. goya, since Andrade et al (2018) did not mention them as absent in females.…”

Treefrog Diversity in the Neotropics: Phylogenetic Relationships of Scinaxini (Anura: Hylidae: Hylinae)

“…; Ololygon canastrensis (Cardoso and Haddad, 1982); Ololygon carnevallii Caramaschi and Kisteumacher, 1989; Ololygon catharinae (Boulenger, 1888a); Ololygon centralis (Pombal and Bastos, 1996); Ololygon flavoguttata (Lutz and Lutz, 1939); Ololygon garibaldiae (Lourenço et al, 2019) new comb. ; Ololygon goya Andrade et al, 2018; Ololygon heyeri Peixoto and Weygoldt, 1987; Ololygon hiemalis (Haddad and Pombal, 1987); Ololygon humilis (Lutz, 1954); Ololygon jureia (Pombal and Gordo, 1991); Ololygon kautskyi Carvalho-e-Silva and Peixoto, 1991; Ololygon littoralis (Pombal and Gordo, 1991); Ololygon longilinea (Lutz, 1968b); Ololygon luizotavioi Caramaschi and Kisteumacher, 1989; Ololygon machadoi (Bokermann and Sazima, 1973); Ololygon muriciencis (Cruz et al, 2011); Ololygon obtriangulata (Lutz, 1973b); Ololygon pixinguinha (Lacerda et al, 2021) new comb. ; Ololygon pombali (Lourenço et al, 2013); Ololygon ranki (Andrade and Cardoso, 1987); Ololygon rizibilis (Bokermann, 1964a); Ololygon skaios (Pombal et al, 2010); Ololygon strigilata (Spix, 1824); Ololygon trapicheiroi (Lutz, 1954); and Ololygon tripui (Lourenço et al, 2010).…”

“…25). These species are characterized by the externally evident inguinal glands (particularly hypertrophied in O. centralis ; Lourenço et al, 2013, 2014); the exceptions being O. goya and O. pombali , which lack them (Lourenço et al, 2013; Andrade et al, 2018). Within this clade, interspecific relationships are poorly supported but fully resolved (Fig.…”

“…In males of some species of Scinax (e.g., S. eurydice, S. granulatus, S. haddadorum , and S. pachycrus ) there is a white, slightly thickened area in the pectoral region that could be glandular, but we did not observe the presence of packed acini in this region, and therefore scored these species as lacking pectoral glands. Glandular acini in the pectoral region were reported for S. goya (Andrade et al, 2018) and S. feioi (Lourenço et al, 2020), and we considered them to be homologous with those present in other species of Scinax . This assumption should be tested with histological studies.…”

First record of Scinax centralis (Anura, Hylidae) in the Triângulo Mineiro region, state of Minas Gerais, southeastern Brazil, with further data on its vocalization

“…The S. catharinae clade harbors species which are distributed along the east, central, and central-west regions of Brazil, northeastern Argentina and southern Paraguay and Uruguay (Duellman et al, 2016;Frost, 2021). Most species of the S. catharinae clade occur in coastal forest environments, while a few occur in phytophysiognomies (e.g., gallery forests) of the Brazilian Cerrado biome, such as S. canastrensis (Cardoso & Haddad, 1982), S. centralis Pombal & Bastos, 1996, S. goya (Andrade et al, 2018), S. machadoi (Bokermann & Sazima, 1973), S. pombali Lourenço, Carvalho, Baêta, Pezzuti & Leite, 2013, S. skaios Pombal-Jr., Carvalho-Jr., Canelas & Bastos, 2010, and Scinax sp. (Nogueira et al, 2016.…”