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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Arthropoda (arthropods)
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Order Ephemeroptera
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Superfamily Heptagenioidea
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Family Isonychiidae
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Genus Isonychia
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Species Isonychia arida
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Species Isonychia berneri
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Species Isonychia bicolor
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Species Isonychia campestris
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Species Isonychia diversa
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Species Isonychia georgiae
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Species Isonychia hoffmani
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Species Isonychia intermedia
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Species Isonychia obscura
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Species Isonychia rufa
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Species Isonychia sayi
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Species Isonychia serrata
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Species Isonychia sicca
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Species Isonychia similis
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Species Isonychia tusculanensis
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Species Isonychia velma
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