Journal
ZOOKEYS
Volume -, Issue 1125, Pages 1-31Publisher
PENSOFT PUBLISHERS
DOI: 10.3897/zookeys.1125.90802
Keywords
Baetidae mayflies; enlarged gills; South East Asia; taxonomy
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Funding
- Fundamental Fund of Khon Kaen University
- National Science, Research and Innovation Fund (NSRF)
- Academic Affairs Promotion Fund, Faculty of Science, Khon Kaen University (RAAPF)
- Research and Graduated Studies, Khon Kae Univerisity
- Department of Biology, Faculty of Science at Khon Kaen University
- Science Achievement Scholarship of Thailand (SAST)
- [2022]
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Megabranchiella gen. nov. is a new baetid mayfly genus from northern Thailand, distinguished by the enlarged single gills on abdominal segment I, covering abdominal sternites II-V.
Megabranchiella gen. nov. (Ephemeroptera: Baetidae) is established as a new baetid mayfly genus from northern Thailand. Two new species, Megabranchiella scutulata sp. nov. and Megabranchiella longusa sp. nov., are described. This genus is distinguished from other Baetidae by abdominal segment I, bearing a pair of enlarged, ventrally oriented single gills, covering abdominal sternites II-V; other gills have normal size and are dorsolaterally oriented. The two new species Megabranchiella longusa sp. nov. and Megabranchiella scutulata sp. nov. can be differentiated by the setation of femur dorsal margin and the shape of abdominal gill I. This mayfly genus was found in flowing water with cobble microhabitats in headwater streams of northern Thailand.
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