MODIFIED TRAP DESIGNS AND HEIGHTS FOR INCREASED CAPTURE OF JAPANESE-BEETLE ADULTS (COLEOPTERA, SCARABAEIDAE)

Several trap designs and trap heights were tested on a golf course for effectiveness of capture of Japanese beetle (Popillia japonica Newman) adults. A single Trece trap top or four Trece trap tops (each with quarter-strength lures) on 121-liter trash container collection bases caught significantly more beetles than a standard Trece trap or a large vane trap on a 121-liter container. Traps with a single Trece trap top on a 121-liter container also caught significantly more beetles than a standard Trece trap when both types were emptied daily to determine if captured beetles were influencing trap capture. Significantly more beetles were captured by traps with trap collection funnel rims at 13 cm compared with rims at 90 cm above the ground.