Blue-eyed Ensign Wasp

A Blue-eyed Ensign Wasp in Hawaii
A Blue-eyed Ensign Wasp in Hawaii

I see these wasps quite often, flitting about, with the little black abdominal part on the stalk vibrating noticeably. However, it wasn’t until recently that I identified them.

This is a Blue-eyed Ensign Wasp (Evania appendigaster) and it’s considered a beneficial insect because it’s a parasitoid, which lays it’s eggs in the eggs of cockroaches. The wasp’s offspring feed off the cockroach eggs, which results in a few less cockroaches in the neighborhood.

Alas, we do not appear to be running out of cockroaches, or seem likely to do so in the immediate future.

5 thoughts on “Blue-eyed Ensign Wasp”

Comments are closed.