Bioacoustics reveals two new syntopic species of Adenomera Steindachner (Anura: Leptodactylidae: Leptodactylinae) in the Cerrado of central Brazil

In this paper, we describe two syntopic species of Adenomera from the Chapada dos Veadeiros microregion, northern State of Goiás, central Brazil, recognized based on morphology, color patterns, and bioacoustics. Specimens and calls were obtained in the Municipality of Teresina de Goiás, central Brazil. Adenomera cotuba sp. nov. is diagnosed from the other 16 congeneric species by its 1) small size (adult male SVL 18.6–20.5 mm) and very robust body; 2) dorsum glandular/granular with no distinctive dorsal granular rows or dorsolateral folds; 3) black or very dark dorsal coloration with no distinctive color patterns (e.g., dorsolateral or vertebral stripes); 4) toe tips not developed into flattened disks; 5) presence of antebrachial tubercle; and 6) advertisement call consisting of a well-defined series of pulsed calls (7–32 calls/series) with progressive increment in amplitude in the first third of each call series when it reaches a sustained plateau. Adenomera juikitam sp. nov. is diagno...

本研究记述了采自巴西中部戈亚斯州北部韦阿代鲁斯高地微区域的两种同域腺蛙属（Adenomera）物种，二者基于形态学、体色模式与生物声学特征得以确认。标本与鸣声均采集自巴西中部的戈亚斯特雷西纳市（Teresina de Goiás）。腺蛙属新种Adenomera cotuba可通过以下特征与其余16个同属物种相区分：1）体型小巧（成年雄性吻肛长（snout-vent length, SVL）18.6–20.5 mm），躯体极为粗壮；2）背部皮肤具腺质/颗粒质感，无明显的背部颗粒脊或背侧褶；3）背部呈黑色或深暗色，无显著体色斑纹（如背侧纹或脊椎纹）；4）趾端未特化为扁平吸盘；5）具前臂结节；6）鸣唱声由序列清晰的脉冲式鸣声组成（每序列含7–32个鸣声单元），在每个鸣唱序列的前1/3阶段振幅逐渐递增，随后达到稳定的平台期。腺蛙属新种Adenomera juikitam的鉴别特征为……