New record of the fringed leaf frog, Cruziohyla craspedopus (Anura: Phyllomedusidae) extends its eastern range limit

ABSTRACT The fringed leaf frog, Cruziohyla craspedopus is rarely sampled in the Brazilian Amazon, probably due to low detection probability associated with its arboreal habit. The knowledge about the species’ distribution stems from successive additions of occasional occurrence records, which indicate that the species is widely distributed throughout Amazonia. We present new occurrence records to update the geographic range of the species, which is hereby extended 224 km to the northeast. We also present morphological data from collected specimens and discuss the updated range from the geographic and ecological points of view. We show that the range of the leaf frog crosses several main tributaries along the southern bank of the Amazonas River, although the species occurrence is apparently limited by a minimum tree cover of 70%.

摘要 流苏叶蛙（fringed leaf frog）Cruziohyla craspedopus在巴西亚马逊地区的采样记录极为稀少，这大概率与其树栖习性导致的低检测概率有关。当前对该物种分布的认知均来自陆续补充的零星出现记录，相关数据显示该物种广泛分布于整个亚马孙流域。本文提供新的物种出现记录，以更新该物种的地理分布范围，本次更新将其分布范围向东北方向拓展了224公里。此外，本文还披露了采集标本的形态学数据，并从地理学与生态学视角对更新后的分布范围展开探讨。研究表明，该叶蛙的分布范围横跨亚马孙河南岸多条主要支流，但其物种出现显然受限于70%的最低林木覆盖度。