Black ant-like bug w/vertically flat hatchet tail.

Alvin, TX

Black ant-like bug 5/16" long, w/wings 1/4" length, The tail is attached with a hard rod from it's body and it swings vertically up and down. It's antenna are 1/4" in length.

Thumbnail by antman1029
Sinks Grove, WV

This is an ensign wasp (Hymenoptera: Evaniidae). They are beneficial in that they parasitize the egg capsules of cockroaches - see http://tinyurl.com/26mw4xx for more detailed information.

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