Alfredo P. Santos-Jr

Reptilia, Squamata, Polychrotidae, Anolis nitens tandai: distribution extension, new state record, and geographic distribution map

Anolis nitens tandai Ávila-Pires, 1995 is a diurnal lizard, frequently found on leaf litter of the humid tropical rainforests from Central and Occidental Amazon, in the states of Acre and Amazonas, Brazil (Ávila-Pires 1995; Vitt et al. 2001). On 12 October 2001 at 09:20 h, we collected one specimen of A. nitens tandai (Figure 1) in Parauá (02o50’38’’ S, 55o10’54’’ W), municipality of Santarém, State of Pará, Brazil. The individual was observed on the ground in a gallery forest, and it was captured in a shrub 25 cm high.

A new species of Leposternon Wagler, 1824 (Squamata, Amphisbaenia) from northeastern Argentina

A new species of Leposternon is described from the Humid Chaco biome in Argentina. The species is known only from its type locality, at El Bagual Ecological Reserve, a conservation unit located in the province of Formosa. The new species can be distinguished from all its congeners by the presence of rostral processes in the maxillae and nasals that contact each other on the facial portion of the skull. Additionally, we present a key for the species of Leposternon.

Amphibia, Anura, Leptodactylidae, Leptodactylus furnarius : rediscovery and distribution extension in the state of Rio Grande do Sul, Brazil

Leptodactylus furnarius Sazima and Bokermann, 1978 (Figure 1) belongs to the Leptodactylus fuscus species group (Frost 2007), which contains species that build underground chambers to lay eggs in foam nests (Giaretta and Kokubum 2004). Males vocalize on wet ground and shallow water bodies where low and sparse vegetation grows or inside the chambers, near to their foam nests (Achaval and Olmos 2003; Eterovick and Sazima 2004).

A new four-pored Amphisbaena Linnaeus, 1758 (Amphisbaenia, Amphisbaenidae) from Brazilian Amazon

A new species of Amphisbaena is described from the Brazilian Amazon, within the area impacted by the Teles Pires hydroelectric power plant, Jacareacanga municipality, State of Pará. Amphisbaena hoogmoedi sp. nov. can be diagnosed from its congeners by the following combination of characters: snout convex in profile view, sligthly compressed not keeled; pectoral scales arranged in regular annuli; conspicuous autotomic site between 7th-8th caudal annuli; 247-252 dorsal half-annuli; 27 caudal annuli; tail length 9.5-10.4% of snoutvent length; four precloacal pores arranged in sequence; three supralabials; a rounded tail; 22-24 dorsal segments in midbody annulus; postmalar row absent; head length 2.1-2.9% of snout-vent length; prefrontals length 46.6-49.5% of head length; prefrontals suture length 38-44.6% of head length; small malar length 10.6-13.4% of ventral length of head ; second infralabial length 33.8-38.5% of head length; ventral length of head 2.7-2.9% of snout-vent length; mouth length 80.2-81.8% of head length; third infralabial length 16.4-19.6% of head length; snout length 62.5-78.6% of head length; ocular length 23.4-26.2% of head length; mental length 23.2-25.4% of ventral length of head; postmental length 27.2-31.3% of ventral length of head; frontals suture length 23.4-32.3% of head length; postocular width 25-31.9% of maximun width of head; first supralabial length 24.9-30.6% of head length; second supralabial length 27.7-30% of head length and second supralabial height 26.9-28.8% of maximun head height. The hemipenis is bilobed, capitate and with lateral lamellae on the lobes; with a centrally-positioned spermatic groove, bifurcated at the base of the lobes, and with each branch extending to the tip of organ.

A New Species of Leposternon (Squamata: Amphisbaenidae) from Brazilian Cerrado with a Key to Pored Species

Abstract A new species of Leposternon is described from the Brazilian Cerrado, with records from the municipalities of Buritizeiro and João Pinheiro, state of Minas Gerais, central Brasil. The new species has precloacal pores and pectorals scales mostly diamond shaped, and these characteristics distinguish it from all congeners except Leposternon cerradensis, Leposternon kisteumacheri, Leposternon maximus, and Leposternon polystegum. It differs from the pored Leposternon species by a combination of external morphology and dental features. The morphology of the new species is similar to other species of the genus Leposternon with precloacal pores. Resumo Uma nova espécie de Leposternon é descrita do Cerrado brasileiro, com registros em Buritizeiro e João Pinheiro, Minas Gerais, Brasil. A nova espécie pode ser distinguida dos demais congêneres, exceto de Leposternon cerradensis, Leposternon kisteumacheri, Leposternon maximus e Leposternon polystegum, por ter poros pré-cloacais e a maioria das escamas peitorais com formato de diamante. A espécie nova difere das espécies do gênero Leposternon com poros pré-cloacais por uma combinação de atributos da morfologia externa e características dentárias. A morfologia da nova espécie é similar à de outras espécies do gênero Leposternon com poros pré-cloacais.

Distribution extension for Hydrodynastes melanogigas Franco, Fernandes & Bentim, 2007 (Serpentes: Dipsadidae: Xenodontinae) in the Araguaia-Tocantins basin, Brazilian Cerrado

We present new records for Hydrodynastes melanogigas Franco, Fernandes & Bentim, 2007, from eastern Mato Grosso state, Central Brazil. The four specimens found in the municipalities of Novo Santo Antonio and Ribeirao Cascalheira represent the first records in the state of Mato Grosso, and expand the species’ known distribution some 380 km southwest

Range extension and geographic distribution of Amphisbaena mitchelli Procter, 1923 in the state of Pará, Brazil

We present here a new record for Amphisbaena michelli for the western of Para State, northern Brazil. The specimen was found in the municipality of Belterra, on the right bank of the Tapajos River, and represents an expansion ca. 350 km west of the previously known geographic distribution of the species.