Cnestrum may refer to:
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Cnestrum (fly), a genus of flies in the family
Ephydridae
Ephydridae (shore flies, sometimes brine flies) is a family of insects in the order Fly, Diptera. Shore flies are tiny flies that can be found near seashores or at smaller inland waters, such as ponds. About 2,000 species have been described worl ...
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Cnestrum (plant), a genus of mosses in the family Dicranaceae
{{Genus disambiguation