Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Discussion, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowse
Info
ImagesLinksBooksData

Species Pachodynerus nasidens - Keyhole Wasp

Striking little wasp - Pachodynerus nasidens Wasp striped end of abdomen - Pachodynerus nasidens small black wasp with yellow tip - Pachodynerus nasidens Wasp - Pachodynerus nasidens - female Pachodynerous nasidens?  - Pachodynerus nasidens Pachodynerous nasidens?  - Pachodynerus nasidens Keyhole Wasp? - Pachodynerus nasidens dark Wasp with yellow abdominal bands  - Pachodynerus nasidens
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Vespoidea (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps and allies)
Family Vespidae (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps)
Subfamily Eumeninae (Potter and Mason Wasps)
Genus Pachodynerus
Species nasidens (Keyhole Wasp)
Explanation of Names
Pachodynerus nasidens (Latreille 1812)
Size
8-12 mm(1)
Identification
Not readily distinguishable from P. pulverulentus, with which it co-occurs in TX & AZ
Range
so US (AZ, TX, FL) to South America; introduced in S. Pacific islands(2)
See Also

Brachygastra mellifica has a much smaller first gastral segment
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.The genus Pachodynerus in North America (Hymenoptera: Vespidae: Eumeninae)
Carpenter J.M. 1986. Proc. Ent. Soc. Wash. 88: 572-577.