A new diploid species belonging to the Odontophrynus americanus species group (Anura: Odontophrynidae) from the Espinhaco range, Brazil

作者：Rocha Pedro Carvalho^*; Ferraz De Sena Leticia Moreira; Pezzuti Tiago Leite; Fortes Leite Felipe Sa; Svartman Marta; Daniel Rosset Sergio; Baldo Diego; De Anchietta Garcia Paulo Christiano

来源：Zootaxa, 2017, 4329(4): 327-350.

DOI：10.11646/zootaxa.4329.4.2

• taxonomy
• morphology
• karyotype
• vocalization
• tadpole
• endemism
• Serra do Cipo
• campo rupestre (rupestrian grassland)

The Odontophrynus americanus species group is a complex of diploid and tetraploid species hardly distinguished by morphological characters. It currently consists of three allopatric diploid species (i.e. O. cordobae, O. lavillai, and O. maisuma) and one widely distributed tetraploid species (i.e. O. americanus). We herein describe a new diploid allopatric species from campo rupestre, a typical phytophysiognomy of the Espinhaco Range, Brazil. The new species is distinguishable by the diploid complement of 2n = 2x = 22 chromosomes, small to medium-sized dorsal dark brown blotches with low contrast on a light brown background, light mid-dorsal stripe absent or greatly interrupted in most specimens with yellowish coloration as the background of both head and flanks of the body, advertisement call with dominant frequency of 840-1080 Hz, pulse rate of 90.5-106.7 pulses/s, and small tadpoles (TL = 24.30-35.69 mm).

• 出版日期2017-10-6