Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Some photos, life histories.
http://insects.ummz.lsa.umich.edu/sphecidwasps/index.html

link's dead
was unable to find a working link by Googling the full title of the paper

 
Sphecid wasps of Michigan
Here is the permanent link:
http://insects.ummz.lsa.umich.edu/fauna/sphecidwasps/index.html

I am retired from the UMMZ, so if the link is changed, it's beyond my control.

Mark

i'd suggest to put "The Sphecid Wasps of Michigan (Hymenoptera: Sphecidae: Sphecinae), by M.F. O'Brien" in the title