Callohesma geminata is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 1911 by British-American entomologist Theodore Dru Alison Cockerell.
The species occurs in Victoria. The type locality is Cheltenham. Other published localities are Tooradin, Mount Yule near Healesville, and Cranbourne.
The adults are flying mellivores. Flowering plants visited by the bees include Eucalyptus species.