Walter (Wasp)

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Walter is a tiny wasp (Spalangia endius)that is useful for controlling house flies and stable flies. Walter lays eggs inside fly pupae which hatch and feed on the developing fly. Then instead of a fly emerging another Walter emerges to continue on with the cycle.

Spalangia wasp are available directly from Bugs for Bugs. Click on the link to visit their website.

Main Target Pests

  • House flies (Musca domestica)
  • Stable flies (Stomoxys calcitrans)

Please note that even though Walter is a wasp he is completely harmless to humans and pets because he’s so tiny (only 2-3mm).

Supplied as 2,500 pupae containing the Spalangia endius wasp.