Mesochra vietnamica sp. nov. (Copepoda, Harpacticoida, Canthocamptidae), the first record of the genus from Vietnam, with a key to Asian species

Authors: Boonyanusith, Chaichat DOI: 10.3897/zookeys.1265.174622 Published: Jan. 1, 2025 Source: ZooKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: Mangrove · Topics: Marine Biology and Ecology Research, Subterranean biodiversity and taxonomy, Aquatic Ecosystems and Phytoplankton Dynamics

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A new species of the genus Mesochra Boeck, 1865 was collected from mangrove habitats at the estuary of the Vu Gia–Thu Bon river system, central Vietnam. Mesochra vietnamica sp. nov. is morphologically close to M. oligochaeta Kornev & Chertoprud, 2008, but differs in i) the position of the inner seta on P1 Enp-1, ii) the length/width ratio of P1 Enp-1, iii) the number of elements on the antennary exopod, and iv) the number of setae on P2 Enp-2. The new species belongs to the group of congeners with P1 Enp-1 longer than the entire exopod. A key to the Asian species of Mesochra is provided.

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