A new treefrog species, Zhangixalus matsuii sp. nov ., is described from Y Ty Commune, Lao Cai Province, northwestern Vietnam. The new species is diagnosed by the following characteristics: size medium (SVL 35.5–37.6 mm in males); dorsum olive green with many brown spots; axilla and groin grey with cream spots along flank; throat cream with grey spots; belly and ventral surface of hind limbs red-orange. The genetic distance between the new species and other species of Zhangixalus ranges from 2.5% to 12.9% (16S rRNA gene fragment). The new discovery brings the species number of Zhangixalus in Vietnam to 11.
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Ninh et al. (2026) studied this question.
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