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Caenoidea (Squaregill Mayflies) is a superfamily of mayflies. There are 273 species of Squaregill Mayflies, in 31 genera and 4 families. This superfamily has been around since the eocene epoch. It includes groups like Prosopistomatidae, Neoephemeridae, and Armored Mayflies.

EOL has data for 13 attributes, including:

Known occurrences, collected specimens and observations of Squaregill Mayflies. View this species on GBIF