Popilius may refer to:
*the nomen of the Roman
gens Popillia.
*
''Popilius'' (genus) a genus of beetles in the family
Passalidae
Passalidae is a family of beetles known variously as "bessbugs", "bess beetles", "betsy beetles", "betsy bugs", or "horned passalus beetles". Nearly all of the 500-odd species are tropical; species found in North America are notable for their siz ...
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