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| Xenophrys pangdaensis Shu, Li, Wu, Liu, He, Li, Zhang & Guo, 2023 |
Abstract
A new species of Xenophrys is described from Yadong County, Tibet Autonomous Region, China based on morphological and molecular evidence. Phylogenetic analyses based on the mitochondrial genes 16S rRNA and COI indicated that this new species represents an independent lineage and the minimum p-distance based on 16S rRNA between this species and its congeners is 4.4%. Additionally, the new species is distinguished from its congeners by a combination of the following morphological characters: (1) small body size, SVL 17.9–22.2 mm in adult males and SVL 23.4 mm in the single adult female; (2) tympanum indistinct, supratympanic fold distinct; (3) canthus rostralis well-developed, snout tip far beyond the margin of the lower lip; (5) pupil vertical; (6) vomerine teeth present, maxillary teeth present; (7) tongue notched posteriorly; (8) supernumerary tubercles absent, subarticular, metacarpal and metatarsal tubercles indistinct; (9) relative finger lengths I < II < IV < III, finger tips rounded, slightly expanded relative to digit widths; (10) toes with narrow lateral fringes and tarsal folds; (11) a dark triangular marking with light edge between eyes, a dark “)(”-shaped marking, with light edge, present on center of dorsum, pectoral glands on sides of the breast.
Key words: Morphology, phylogenetic analyses, taxonomy, Xenophrys pangdaensis sp. nov., Yadong County
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| Xenophrys pangdaensis sp. nov. in life. A dorsal view of body B ventral view of body C ventral view of hand D ventral view of foot E lateral view of body F lateral view of head. |
Xenophrys pangdaensis sp. nov.
Diagnoses: (1) Small body size, SVL 17.9–22.2 mm (20.5±1.8, n = 6) in adult males and SVL 23.4 mm (n = 1) in the adult female (Table 3); (2) tympanum indistinct, supratympanic fold distinct; (3) canthus rostralis well-developed, snout tip far beyond the margin of the lower lip; (5) pupil vertical; (6) vomerine teeth present, maxillary teeth present; (7) tongue notched terminally; (8) supernumerary tubercles absent, subarticular, metacarpal and metatarsal tubercles indistinct; (9) relative finger lengths I < II < IV < III, finger tips rounded, slightly expanded relative to digit widths; (10) toes with narrow lateral fringes and tarsal folds; (11) a dark triangular marking with light edge between eyes, a dark)(-shaped marking, with light edge, present on center of dorsum, pectoral glands on sides of the breast.
Etymology: The species name pangdaensis indicates the type locality of Pangda Village, Yadong County, Tibet Autonomous Region, China.
Suggested name: Pangda Horned Toad (English), and
Pang Da Jiao Chan (庞达角蟾, Chinese).
Guocheng Shu, Ke Li, Yayong Wu, Qin Liu, Zhongping He, Ling Li, He Zhang and Peng Guo. 2023. A New Species of Xenophrys (Amphibia, Anura, Megophryidae) from southern Tibet, China. ZooKeys. 1182: 307-329. DOI: 10.3897/zookeys.1182.106828
