Professor, Department of Biology, College of Arts and Sciences, University of Texas at Tyler (past)
2011
Chair, Department of Biology, College of Arts and Sciences, University of Texas at Tyler (past)
2011
Professor, Department of Entomology, College of Agriculture, Kansas State University
Chair, Department of Entomology, College of Agriculture, Kansas State University
Associate Professor, Department of Entomology, College of Agriculture, Kansas State University
S.A. Lindsey Professor , Department of Biology, College of Arts and Sciences, University of Texas at Tyler (past)