ABSTRACT
The genus Proceratophrys Miranda-Ribeiro comprises 41 species distributed in South America, especially in Brazil (Nascimento et al. 2019). Proceratophrys species have been traditionally organized into four species groups based on morphology of supraocular and postocular swellings, and presence or absence of rostral appendage (Cruz Napoli 2010). However, these groupings are not supported by molecular data (Teixeira et al. 2012; Dias et al. 2013, Mângia et al. 2018).
Subject(s)
Anura , Vocalization, Animal , Animals , Brazil , ExtremitiesABSTRACT
We describe a new species of the Scinax catharinae group from one of the last remaining fragments of Atlantic Forest in northeastern Minas Gerais. The new species is distinguished from most species of the group mainly by having the mucronate snout in dorsal view, the unique light-yellow coloration on the gular surface in life contrasting with its overall color pattern, and the m. depressor mandibulae with an origin on the dorsal fascia at the level of the m. dorsalis scapulae. These two latter features are novelties in the diagnosis of Scinax species. The new species is currently known only from municipality of Santa Maria do Salto, state of Minas Gerais, Brazil. This locality is a remaining fragment of Atlantic Forest and has a peculiar geomorphic feature that has been poorly sampled so far.
Subject(s)
Anura , Rainforest , Animals , Body Size , Brazil , Organ SizeABSTRACT
Dendrophryniscus brevipollicatus Jiménez de la Espada is a Neotropical bufonid endemic to a small range of the Brazilian Coastal Atlantic Forest, with reduced body size for the family and bromeligenous habit. We reviewed the taxonomic status of populations of D. brevipollicatus from states of Rio de Janeiro and São Paulo, including some continental islands, based on external morphology. We tested our morphological species by a DNA-barcoding approach with sequences of 16S RNA ribosomal gene fragment. DNA-barcoding analysis included other recognized Dendrophryniscus species and was concordant with morphological species diagnosed in our review. Intraspecific genetic distances ranged from 0 to 2.72 % (± 0.91 %). Interspecific distances ranged from 3.35 % (± 0.90 %) to 20.15 (± 2.23 %). Optimal threshold values ranged from 2.8 % to 3.0 % and barcode gap analysis showed that for all individuals the furthest intraspecific distances was always lower than the closest non-conspecific individual. Seven distinct species were recognized. A neotype for D. brevipollicatus was designated and described; the type locality was determined for the Açude da Solidão (22º57'S, 43º17'W, Datum WGS 84; 410 m altitude), Parque Nacional da Tijuca, Municipality of Rio de Janeiro, State of Rio de Janeiro, Brazil. Two species were revalidated: D. imitator (Miranda-Ribeiro), with designation of a lectotype and descriptions of the lectotype and of a topotype from the restricted type locality, Alto da Serra (23o46'S, 46o19'W, Datum WGS 84, 800 m altitude), Municipality of Paranapiacaba, State of São Paulo, Brazil; and D. lauroi (Miranda-Ribeiro), with descriptions of the lectotype and of a topotype from the type locality, Municipality of Angra dos Reis (22o54'S, 44o20'W, Datum WGS 84; 25 m altitude), State of Rio de Janeiro, Brazil. Four new species were described: D. davori sp. nov., from Baixo Caledônia (22º21'S, 42º35'W, Datum WGS 84; 1600 m altitude), Municipality of Nova Friburgo, State of Rio de Janeiro, Brazil; D. haddadi sp. nov., from Parque Estadual da Serra do Mar, Núcleo Santa Virgínia (23o21'S, 45o08'W, Datum WGS 84; 970 m altitude), Municipality of São Luís do Paraitinga, State of São Paulo, Brazil; D. izecksohni sp. nov., from Campo de Fruticultura da Bocaina (currently Núcleo Senador Vergueiro), Municipality of São José do Barreiro (22º38'S, 44º34'W, Datum WGS 84, 540 m altitude), State of São Paulo, Brazil; and D. jureia sp. nov., from Estação Ecológica da Juréia-Itatins-Núcleo Rio Verde (24º22'S, 47º04'W, Datum WGS 84; 32 m altitude), Municipality of Iguape, State of São Paulo, Brazil. Geographical distributions of all species are provided.
Subject(s)
Bufonidae , Animals , Brazil , ForestsABSTRACT
The original description of Ischnocnema lactea (Miranda-Ribeiro, 1923) was based on two specimens and an inaccurate type locality. These circumstances have obscured the identity of this name. Moreover, the I. lactea species has had a complex taxonomic history and, in general, specimens of species in this group are poorly represented in amphibian collections. The diagnosis of the series is confusing, with many non-exclusive and variable characters barely useful. An accurate diagnosis for the series requires a precise characterization of I. lactea, its type species. Recently discovered populations, museum data, and new information on the collector of the type specimen allowed the elucidation of important issues related to this species. Here we provide the redescription of Ischnocnema lactea based on the lectotype, and intraspecific variation based on newly collected specimens. Ischnocnema lactea is characterized by its large body size (adult 19.6-26.7 mm SVL; females 27.6-34.3 mm SVL); dorsum and flanks rugose, venter granular; vocal sac single and subgular, externally expanded; finger disks expanded, T-shaped, indented and truncate in fingers II-IV; toes relative length I<II<III<V<IV; black blotch on cloacal region, tarsus, and feet; moderate calcar tubercle present. Its advertisement call consists on a single short pulsed note ranging from 634 to 1060 milliseconds, with dominant frequency ranging from 2239.5 to 2756.2 Hz. Males call perched on vegetation mostly during daytime, starting early in the morning, and reproduction is explosive, associated to cold front rains. Ischnocnema lactea is a secretive and endemic inhabitant of the Serra do Mar in Southeastern Brazil. The type locality is redefined to the Municipality of Caraguatatuba.
Subject(s)
Anura , Animals , Body Size , Brazil , Female , Foot , Male , MuseumsABSTRACT
The analysis of the external morphology variation in Crossodactylus bokermanni, C. trachystomus, and in unidentified specimens from 14 localities along the southern region of the Serra do Espinhaço, state of Minas Gerais, Brazil, revealed that all of these forms belong to the same taxon. Crossodactylus bokermanni is considered a junior synonym of C. trachystomus, whose holotype is redescribed and figured. The population from Serra da Canastra, western Minas Gerais, previously referred to as Crossodactylus cf. trachystomus, is herein described and figured as Crossodactylus franciscanus. Its advertisement call is redescribed and compared to those known for the genus.
Subject(s)
Anura/classification , Animal Distribution , Animal Structures/anatomy & histology , Animal Structures/growth & development , Animals , Anura/anatomy & histology , Anura/growth & development , Body Size , Brazil , Ecosystem , Female , Male , Organ SizeSubject(s)
Amphibians , Biodiversity , Ecosystem , Amphibians/classification , Animals , Brazil , Conservation of Natural Resources , Environment , Population Density , Population DynamicsABSTRACT
New species of Hyla from the "Serra da Mantiqueira, Itatiaia, Rio de Janeiro" State (Amphibia, Anura, Hylidae) - Hyla gouveai n. sp. is described and illustrated and it is closest to the bigger individuals of the species in the group "circumdata", not presenting, however, the characteristic pattern of dark transversal bands on the posterior inner coxal surface
