Skip to Main navigation Skip to Left navigation Skip to Main content Skip to Footer

University of Minnesota Extension
www.extension.umn.edu
612-624-1222

Extension > Garden > Diagnose a problem > What insect is this? > Insects found indoors > Winged Insects - 1/2 inch and greater > Bird-nest wasps

Print Icon Email Icon Share Icon

Bird-nest wasps

Isodontia spp.

Bird-nest-wasp-1

Jeff Hahn, University of Minnesota


Size: 1/2 - 3/4 inch long

Description: Slender black wasps; smooth bodies with few hairs.

Where/When: Bird-nest wasps are associated with window cases, constructing nests made with grass. Nests are provisioned with katydids or crickets. They are active mid-summer to fall. Their nests may also be noticed during winter.

Significance: They are only a nuisance. They do not harm people or damage windows. They do not necessarily come back to nest in the same site the following year.

More information on Bird-nest wasps...

Did this tool help you identify the insect? Tell us.
  • © Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy