Responses by adult Nitidulidae (Coleoptera) to synthetic aggregation pheromones, a coattractant, and effects of trap design and placement

Aggregation pheromones of the nitidulids, Carpophilus hemipterus (L.), C. freemani Dobson, C. mutilatus Erichson, and C. lugubris Murray were field tested at two sites (one in Crawford County and the other in Knox County) in Ohio. At both sites traps baited with pheromone plus bread dough caught at least five times more adult beetles than bread dough by itself. Trap design and height influenced trap catch. In most cases the nitidulid inventory technique trap yielded more nitidulids than did the wind-oriented pipe trap or the Japanese beetle trap. Trap performance in the field was dependent upon the nitidulid species responding. Aerial traps were preferred by C. lugubris and C. hemipterus, while C. freemani indicated no clear preference between aerial or ground traps. Two additional nitidulid species were captured in relatively large numbers by the coattractant: Stelidota geminata (Say), and Glischrochilus quadrisignatus (Say).