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Type: Article
Published: 2024-02-08
Page range: 577-587
Abstract views: 5
PDF downloaded: 4

A new Cinygmula McDunnough, 1933 species with distinct imaginal frontal fold from eastern Chinese Himalaya (Ephemeroptera: Heptageniidae)

College of Life Sciences; Nanjing Normal University; Nanjing 210023; China; Nanjing Zhonghua High School; Nanjing 210019; China
College of Life Sciences; Nanjing Normal University; Nanjing 210023; China
College of Life Sciences; Nanjing Normal University; Nanjing 210023; China
Ephemeroptera transformation morphology subimago biogeography mayfly


In the family Heptageniidae (Ephemeroptera), Cinygmula hutchinsoni (Traver, 1939) from central Asia is the only species known to possess pointed claws and a distinct frontal fold. Here, a second similar species with the same combination of characters is described. Cinygmula longissima sp. nov. is found in the eastern Himalaya of China, shows stouter imaginal penes, darker wingbases, and narrower nymphal gills than the previous one. This discovery indicates that this species of Heptageniidae are not limited to central Asia but live in high-altitude alpine habitats.



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