1. New Mexico State Univ. Rex E. Kirksey Agricultural Science Center, 6502 Quay Rd. AM.5, Tucumcari, NM 88401.
2. E. J. Shields and A. M. Testa, Extension Entomology, Cornell University, Ithaca, NY.
3. R. P. Porter, Extension Entomologist, Texas A&M University AgriLife Extension, Lubbock, TX.