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We describe two new species of Rhinella (Anura: Bufonidae) from the department of Loreto, Peru. We integrate morphological and phylogenetic analyses to provide evidence of new species. R. angeli sp. nov. is diagnosable from all congeners by its pronounced fleshy proboscis and R. unapensis sp. nov. by the small size (mean snout-vent length=37.7 ± 4.1 mm) of adult males, snout pointed in dorsal view, nearly acute in lateral view, and small bony protrusion at the angle of jaws among other characters. The two species are allopatric, where the first species is known to be associated inhabits upland (=terra firme) forests, while the second white sand forests (=varillales) around Iquitos city. The two new species represent the 20th and 21st species of the Rhinella margaritifera species group.

Boana hobbsi is a poorly known hylid frog currently placed within the Boana punctata group. Yet, morphological, ecological and bioacoustic traits do not support this placement, with no molecular data being available to date to test this hypothesis. Based on newly collected mitochondrial DNA sequences, morphological data review and field observations, we provide new insight into the phylogenetic relationships, morphological variations and geographic distribution of B. hobbsi. Our findings reveal that B. hobbsi is nested (with strong support) within the Boana benitezi group, recovering once more a polyphyletic Boana punctata group. Supported by this new genetic, morphological and ecological evidence, we propose a new taxonomic arrangement which includes B. hobbsi as a member of the Boana benitezi group. Furthermore, we emphasize the importance of conducting biological inventories in remote Amazonian areas, where many taxonomic and geographic knowledge gaps persist with regards to Amphibian diversity.

Neotropical toads from the Rhinella margaritifera species group have been considered a taxonomic puzzle for a long time. Because of the high morphological similarity and an unknown number of undescribed taxa among the species of this group, we did an extensive search for character distribution within all nominal taxa. Herein we describe Rhinella parecis sp. nov. a new species from Southern Brazilian Amazon. We provide a morphological diagnosis, morphometric comparisons with similar species, and a molecular phylogenetic hypothesis on the relationships of the new species. Rhinella parecis sp. nov. is assigned to the R. margaritifera group and differs from others species by snout-vent length ranging 40.7–53.5 mm in males (n=12) and 44.9–54.8 mm in females (n=4), snout rounded in dorsal view, acute with fleshy ridge extending to tip of snout in lateral view, canthal and pre-orbital crests absent, supra-orbital, parietal and supra-tympanic crests present and low, dorsolateral row of tubercles present, bony protrusion at the angle of jaws absent, tympanum evident, vertebral apophyses absent and toes half-webbed. The new species is the 20th species associated to the R. margaritifera group distributed in the Chapada dos Parecis, a probable center of endemism in states of Rondônia and Mato Grosso, Brazil.

Anurans in the Rhinella margaritifera group have a long history of taxonomic confusion, mainly by morphological similarity between species and lack of acoustic and genetic data for many of the 19 described species. Herein, we presented data for Rhinella gildae based on recently collected specimens from its type locality. We provide patterns of morphological variation, measurements, advertisement and release calls and infer the phylogenetic position of R. gildae. The species geographical distribution was updated, occurring in two Amazonian localities in Maranhão state, and Cerrado areas in Maranhão and Tocantins states and also in a rainforest enclave inside Caatinga domain in Ceará state.

Amazophrynella comprises 11 small bufonid species with a pan-Amazonian distribution (Fouquet et al. 2012a, b; Rojas et al. 2016, Rojas et al. 2018). All species inhabit the forest leaf litter, breed in seasonal puddles and are diurnally and nocturnally active (Fouquet et al. 2012b; Rojas et al. 2014; 2015; 2016). Until now only one nominal species, A . javierbustamantei , and two putative lineages— A. moisesii (Rio Yuyapichis, Peru) and A . siona (Santa Cecilia, Ecuador)—had their advertisement calls formally described (Duellman 1978; Schluter 1981; Rojas et al. 2016). Herein, we described for the first time the advertisement calls from additional four species of Amazophrynella .

Amazophrynella is a taxonomically poorly known bufonid genus with a pan-Amazonian distribution. A large part of this ambiguity comes from taxonomic uncertainties regarding the type species A. minuta . In this study we compare morphological and molecular data of topotypic specimens of A. minuta with all other nomical congeneric species. Based on these comparisons, we describe two new species. The first species, A. amazonicola sp. nov., differs from other recognized congeners by having a tip of snout with a small triangular protrusion (in dorsal and lateral view), spiculated body and basal webbing on fingers I and II. The second species, A. matses sp. nov., differs from congeners by the smallest snout to vent length of the genus, edges of nasal protrusion dilated and elliptical shape palmar tubercles. The two species are allopatric, where the first species is known to be associated with white sand forests (=campinaranas), while the second inhabits upland (=terra firme) forests. Both species are diagnosable by a series of substitutions in the 16S rDNA, and both species are highly divergent from their sister taxa (p-distances range from 7–14%)

Phyllodytes gyrinaethes Peixoto, Caramaschi & Freire, 2003 is an endemic species from the Atlantic Forest of Northeast Brazil, occurring in the states of Alagoas and Pernambuco (Freire & Peixoto 2004). The red color pattern on the inguinal region and concealed surfaces of the hind limbs together with a highly modified tadpole makes P. gyrinaethes the most different species of the genus (Peixoto et al. 2003), being unique and in its own species group according to Caramaschi et al. (2004).

A new species of Pseudopaludicola from western Piauf State, Brazil, in the Cerrado domain is described. Pseudopaludicola parnaiba sp. nov. is a member of the genus Pseudopaludicola, on the basis of the presence of one hypertrophied antebrachial tubercle, posterolateral process of the hyoid outlined and epicoracoid cartilages slightly overlapped. The new species is characterized by an advertisement call composed of 6-46 non-pulsed notes per call and dominant frequency of 4794 ± 296 Hz, which supports an independent lineage. Additionally, the small size, body slender, toe tips knobbed with central groove, abdominal fold complete, tibio-tarsal articulation reaching the posterior border of the eye, and prepollex and prehallux composed of base and one element are character states that distinguish P. parnaiba from all the members of Pseudopaludicola. We provide its formal description with regard to external morphology, osteological characters and advertisement call.

We describe a new Amphisbaena from the Brazilian coastal zone at the municipalities of Guamare and Macau, state of Rio Grande do Norte. The new species, Amphisbaena littoralis sp. nov., is characterized by six precloacal pores, 252–264 body annuli, 30–34 tail annuli with autotomy on the 6 th tail annuli, 20–22 dorsal and 21–24 ventral segments to the midbody annulus.

Made available in DSpace on 2022-04-28T21:02:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-20 We describe adult morphology, advertisement call and some natural history traits of a new species of toad from the Pantanal, western Brazil. Rhinella paraguayensis sp. nov. belongs to the Rhinella margaritifera group, and is characterized by medium size, snout rounded in dorsal view, with a vertical apical ridge, supraorbital crests weakly developed, parietal crest not well developed, postorbital crest prominent, presence of a dorsolateral line of tubercles, tympanum evident, bony protrusions at angle of jaws, absence of vertebral apophyses and of projections on upper eyelids, and parotoid glands small. The new species is distinguished from other species of the group by geographic distribution and by the use of floating mats of vegetation as reproductive site. Copyright © 2010 Magnolia Press. Departamento de Parasitologia Instituto de Biociências Universidade Estadual Paulista, Distrito de Rubião Jr., s/no, CEP 18618-000, Botucatu, S P Pós-Graduação em Ecologia e Conservação da Biodiversidade Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa, s/no, CEP 78060-900, Cuiabá, MT Departamento de Ciências Básicas e Produção Animal Faculdade de Agronomia e Medicina Veterinária Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa, s/no, CEP 78060-900, Cuiabá, MT Departamento de Parasitologia Instituto de Biociências Universidade Estadual Paulista, Distrito de Rubião Jr., s/no, CEP 18618-000, Botucatu, S P