Tibicen walkeri distribution

[Tim at]

In the absence of Tibicen spp. literature here, I am searching for some
quick information on the distribution of Tibicen walkeri.  Please
respond directly to me if you can help.

Everett D. (Tim) Cashatt, Ph.D.
Curator of Zoology
Illinois State Museum
Research and Collection Center
1011 E. Ash Street
Springfield, IL  62703
Tel. (217) 782-6689
FAX  (217) 785-2857
http://www.museum.state.il.us/research/entomology/index.html