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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 Diptera
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Family Richardiidae
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Genus Euolena
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Species Euolena abdominalis
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Species Euolena egregia
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Species Euolena flava
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