Messenger Kevin R, Dahn Hollis A, Liang Yuanrui, Xie Peng, Wang Yong, Lu Changhu
Nanjing Forestry University, Department of Zoology, Nanjing, Jiangsu, China Alabama A & M University, Department of Biological and Environmental Sciences, Normal, Alabama, USA.
Zootaxa. 2019 Feb 11;4554(2):561-583. doi: 10.11646/zootaxa.4554.2.9.
A new species of horned toad, Megophrys ombrophila sp. nov., is described based on specimens found from Guadun village from Mount Wuyi in northwestern Fujian Province, China. The species is distinguished from other described Megophrys by morphology, bioacoustics, and molecular data of the 12S and 16S mitochondrial loci. The species is characterized by its rotund stature, head length approximately equal to head width, canthus rostralis well developed, tympanum large and distinct, vomerine teeth absent, margin of tongue smooth, not notched from behind, heels of the feet not meeting when femurs are held at 90° to the axis of the body and tibias are depressed against the femur, toes weakly webbed at base, dorsal skin mostly smooth with scattered granules and ridges, usually the presence of two discontinuous dorsolateral ridges, supratympanic fold distinct and well-developed, and with females ranging from 32.8-35 mm snout-to-vent length, and males ranging from 27.4-34.5 mm SVL. In its type locality, the species is sympatric with M. boettgeri and M. kuatunensis; and phylogenetically, the most closely related described species is M. obesa from southwest Guangdong province. As more cryptic species are described within the subfamily Megophryinae, the more apparent becomes the need for fine-scale molecular and phenotypic assessment to capture the many forms of this hyper-diverse group.
基于在中国福建省西北部武夷山挂墩村发现的标本,描述了一种角蟾新物种——喜雨角蟾(Megophrys ombrophila sp. nov.)。该物种通过形态学、生物声学以及12S和16S线粒体基因座的分子数据与其他已描述的角蟾物种相区分。该物种的特征为体型圆胖,头长约等于头宽,吻棱发达,鼓膜大且明显,无犁骨齿,舌缘光滑,后端无缺刻,当股骨与身体轴线呈90°且胫骨贴于股骨时,脚跟不相遇,趾基部微蹼,背部皮肤大多光滑,有散在的颗粒和嵴,通常有两条不连续的背外侧嵴,颞褶明显且发达,雌性体长32.8 - 35毫米,雄性体长27.4 - 34.5毫米。在其模式产地,该物种与博氏角蟾和挂墩角蟾同域分布;在系统发育上,与其亲缘关系最近的已描述物种是来自广东省西南部的肥胖角蟾。随着角蟾亚科内更多隐存物种被描述,对精细尺度的分子和表型评估以捕捉这个高度多样化类群的多种形态的需求就变得越发明显。