Discovering the diversity of tadpoles in the mid-north Brazil: morphological and molecular identification, and characterization of the habitat.

Brazil stands out for presenting the highest amphibian anuran diversity in the world. However, taxonomic studies that address characteristic of larval stage of anurans are incipient, representing only 62% of known species. We assess the species diversity of tadpoles from eastern Maranhão state, mid-northern region of Brazil based on morphological and molecular identification (.

The DNA barcode reveals cryptic diversity and a new record for the genus (Characiformes, Anostomidae) in the hydrographic basins of central northern Brazil.

is one of the most speciose genera of the order Characiformes, with 81 valid species distributed throughout much of Central and South America. The considerable diversity of this genus has generated extensive debate on its classification and internal arrangement. In the present study, we investigated the species diversity of the genus in central northern Brazil, and conclude that six valid species-, , , , cf.

New records of Niceforo's big-eared bat, (Sanborn, 1949) (Chiroptera, Phyllostomidae), from the state of Maranhão, Brazil.

Niceforo's big-eared bat, (Sanborn, 1949), is a monotypic species which has been recorded in a number of Brazilian states, but has a disjunct distribution in this country. This study presents the first record of in the Brazilian state of Maranhão. The specimens were collected in the municipalities of Godofredo Viana and Cândido Mendes, in fragments of the Amazon forest.