Cyclohexyl phenylacetate was found to be attractive to male and female checkered flower beetles,Trichodes ornatusSay, a serious predator of the alfalfa leafcutting bee,Megachile pacifica(F.), an important pollinator of alfalfa. Sixteen polyethylene tub traps baited with cyclohexyl phenylacetate and placed around a bee shelter in an alfalfa seed field captured 35,768 beetles in 7 wk, and 3135 were taken in a single trap within 6 days. These traps show promise for use in survey and control programs.