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Type: Article
Published: 2021-06-15
Page range: 392–402
Abstract views: 931
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A new species of Ephoron Williamson, 1802 (Ephemeroptera: Polymitarcyidae) from Thailand

PhD Degree Program in Environmental Science, Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.
Korean Entomological Institute, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea.
Korean Entomological Institute, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea; Department of Environmental Science and Ecological Engineering, Graduate School, Korea University, Seoul 02841, Korea.
Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.
Aquatic insects, Mayflies, Asia, Oriental region, DNA barcoding Ephemeroptera


The genus Ephoron Williamson, 1802 is widely distributed around the world. In Thailand, only Ephoron indicus Pictet, 1843 was reported in 1961. In this study, a new Ephoron mayfly is described as Ephoron ookaewae sp. nov. In this new species description, the morphological characteristics of larvae and eggs in addition to adults are also shown in detail. Number of tubercles on mandibular tusks, and a median frontal process in larvae, distinguish Ephoron ookaewae sp. nov. from other Ephoron species. Their polar cap shape and a concave indentation in their eggs are also unusual. In addition, the mitochondrial DNA COI sequence data of the newly described Ephoron ookaewae sp. nov. is registered in GenBank. Registration of sequence data for the DNA barcode region of Ephoron mayflies inhabiting the Oriental region remains limited, however it will be useful for future research.


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