Any of various mayflies of the genera Baetis, Cloeon, and Ephemerella, with an olive-brown body. Frequently with distinguishing word.
| 单词 | θ34601 | 
| 释义 | the world > animals > invertebrates > phylum Arthropoda > class Insecta > subclass Pterygota > 			[noun]		 > division Exopterygota or Hemimetabola > order Ephemeroptera > family Ephemeridae > member of genus Baetis or Ephemerella (1)		 olive1889 Any of various mayflies of the genera Baetis, Cloeon, and Ephemerella, with an olive-brown body. Frequently with distinguishing word.  | 
	
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