A nesting population of Tachysphex pechumani is recorded from near Indiana Dunes National Lakeshore, Porter County, Indiana. This record is a western extension of the known range of this uncommon species. Nesting biology of T. pechumani at this locality was similar to previously published observations on this species.
Kurczewski, Frank E.
"First Record of Tachysphex Pechumani (Hymenoptera: Sphecidae) From Indiana,"
The Great Lakes Entomologist, vol 33
Available at: https://scholar.valpo.edu/tgle/vol33/iss1/8