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University of Minnesota Extension

Species guide - species detail

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Tetrastichus sp. (Tiny parasitic wasps)


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The genus Tetrastichus are tiny parasitic wasps in the family Eulophidae. We did not identify our specimens to species.


Tetrastichus are tiny black wasps that look like the more common Melittobia, often emerging in groups from a parasitized nest. They can be distinguished from Melittobia by several microscopic characteristics.

Nest Structure

Tetrastichus parasitized wasps in the family Pompillidae (spider wasps) in Bee Atlas blocks.

Hole Sizes

No information at this time.


No information at this time.

Activity Period

No information at this time.


Thank you to John Luhmen for help identifying parasitic wasps

Minnesota Record Map

These data are from the Minnesota Bee Atlas project.

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