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476 mayflies species
Acanthametropus pecatonica
Acentrella barbarae
Acentrella insignificans
Acentrella lapponica
Acentrella nadineae
Acentrella parvula
Acerpenna macdunnoughi
Acerpenna pygmaea
Ameletus amador
Ameletus bellulus
Ameletus browni
Ameletus celer
Ameletus cooki
Ameletus cryptostimulus
Ameletus dissitus
Ameletus doddsianus
Ameletus exquisitus
Ameletus lineatus
Ameletus ludens
Ameletus majusculus
Ameletus oregonensis
Ameletus pritchardi
Ameletus similior
Ameletus sparsatus
Anthopotamus myops
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