Ectemnius ruficornis

Ectemnius ruficornis is a species of square-headed wasp in the family Crabronidae.

Subspecies
These two subspecies belong to the species Ectemnius ruficornis:
 * Ectemnius ruficornis ruficornis (Zetterstedt, 1838)
 * Ectemnius ruficornis taiwanus Tsuneki, 1968