Reference:

Lechner, G. K., 2015. Large homing flight distances flown by female Sphex pensylvanicus Linnaeus, 1763 (Hymenoptera: Sphecidae: Sphecinae) in Sioux City, Iowa, USA. Life: The Excitement of Biology, 3(2), 149-152.

URL:

https://blaypublishers.com/wp-content/uploads/2015/07/lechner-sphecid-fligth-records1.pdf

---