ABSTRACT
Joseph G. Burleigh, Robert W. Katayama, and Nader Elkassabany, Depart ment o f Agriculture, University of Arkansas at Pine Bluff, Pine Bluff, AR 71601, USA.
Correspondence for Nader Elkassabany may be addressed to Department of Entomology, Univarsity of Arkansas, Fayetteville, AR 72701, USA.
