''Eucessia'' is a genus of

bee Bees are winged insects closely related to wasps and ants, known for their roles in pollination and, in the case of the best-known bee species, the western honey bee, for producing honey. Bees are a monophyly, monophyletic lineage within the ...

flies ( insects in the family Bombyliidae). There is at least one described species in ''Eucessia'', ''E. rubens''.

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Further reading