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Identify and describe a new diplozoid species associated with Garra surgifrons in China.

April 20, 2026Parasitology0 citationsOpen Access

Paradiplozoon garra n. sp. (Monogenea, Diplozoidae), a new species from Garra surgifrons (Cyprinidae, Labeoninae) in southwest China

LSLu ShenYunnan Normal University FMFei-Yan MengYunnan Normal University LFLixian FanYunnan Normal University

Key Points

Identify and describe a new diplozoid species associated with Garra surgifrons in China.
Conducted a parasitological survey at a fish farm in Kunming in 2025
Utilized morphological descriptions and molecular analysis for species differentiation
Performed phylogenetic analyses to determine the evolutionary relationship among species.
Confirmed a new diplozoid species distinct from Paradiplozoon bingolensis
Provided the first record of a diplozoid in the Garra genus in China
Positioned the new species at the basal position among Chinese Paradiplozoon species.

Abstract

In a parasitological survey conducted in 2025 at a fish farm in Kunming, southwest China, a new diplozoid species was discovered on Garra surgifrons, representing the first record of a diplozoid previously reported from fish within the genus Garra in China.Morphological and molecular evidence confirm that the new species is clearly differentiated from Paradiplozoon bingolensis, the only diplozoid previously reported from Garra fishes.Phylogenetic analyses place the new species at the basal position of Chinese Paradiplozoon species.Considering the natural distribution of its host in Yunnan province and adjacent areas of Myanmar and Laos, southwestern China and Southeast Asia may represent important centers of origin and https://doi.org/10.

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