Description of the advertisement call of Cycloramphus bolitoglossus (Werner, 1897), with comments on other species in the genus from Santa Catarina, south Brazil (Amphibia, Cycloramphidae)

Species of the genus Cycloramphus Tschudi 1838, occurring in the Atlantic Forest of Brazil are poorly known frogs which are generally under-represented in herpetological collections. For the first time, we provide the description of the advertisement call of C. bolitoglossus. The call consists of 16-18 harmonic notes emitted at intervals of 0.15-0.25 s. Call duration is from 3.95-4.48 s., and duration of the first note ranges from 0.21-0.28 s., whereas duration of each remaining note ranges from 0.07-0.12 s. Dominant frequency is 1.32-2.44 kHz. In the herpetological collections of the Natural History Museums in Berlin, Hamburg, Munchen, and Stuttgart, we found valuable historical material of Cycloramphus collected by the German collector W. Ehrhardt in northeastern Santa Catarina state. This material included few specimens of C. bolitoglossus and C. diringshofeni, C. izecksohni which was also observed during our field work and C. cf. asper. Two syntypes of Niedenia spinulifer Ahl (a junior synonym of C. asper Werner) which were considered to be lost were rediscovered in the Berlin collection. We also report the first record of a species in this genus which is preliminary referred to C. cf. catarinensis from the Atlantic island Ilha de Santa Catarina.