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

TaxonomyBrowseInfoImagesLinksBooksData
Photo#66669
Isodontia philadelphica - female

Isodontia philadelphica - Female
Snowhill Road north of Cabin Branch Creek, Treyburn area, Durham County, North Carolina, USA
July 26, 2006
Size: 20 mm
Size estimated. Taking nectar on Hoary Mountain-mint, Pycnanthemum incanum, or a similar species. This looks very similar to a wasp identified by Eric Eaton as Isodontia philadelphica, compare:

(Eric verifies this--see comments.)
This is a pretty common species in the North Carolina State University Entomology Collection. I know species identification in this genus is tough. This one, with its blue-black wings, does look different than the ones I usually see, which have more brownish wings:

Those are likely I. mexicana and/or I. apicalis, based on Eric Eaton's identifications, and I. mexicana is common in the NCSU collection, linked above.

Yes.
Excellent image, Pat! You can clearly see this is a stocky insect, with long, heavy, BLACK pubescence, and violet wings. Unmistakable, once you learn those field marks. Sphex pennsylvanica, which could be confused with this species, almost never hold their wings at an angle when nectaring.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.