Attractiveness to Nitidulidae (Coleoptera) of Natural Attrahents of Tree and Fungus Origin Supplemented with Vinegar and Water in an Appalachian Hardwood Foresest1

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Abstract
A feeder station was designed and tested to draw matinhabiting Nitidulidae (Coleoptera) to surfaces on feeder blocks where they can be counted or collected alive for subsequent testing to determine if they were carrying spores of the oak wilt fungus, Ceratocyslis fagacearum(Bretz) Hunt. Daily observations were made on the number and genera of Nitidulidae attracted to the fungus-inoculated and non inoculated red oak, Quercus rubra L., and red maple Acer rubrum L., feeder blocks kept moist with water or vinegar for 12 days in August ]965. More than twice as many nitidulids were observed on oak blocks than on maple blocks. Blocks moistened with vinegar attracted greater numbers of Carpophilus, the most abundant genus, than blocks moistened with water. Larger numbers of this genus were observed on blocks inoculated with C. pluriannulata (Hedge.) C. Moreau, a fungus closely related to C.fagacearum but nonpathogenic, than on the noninocuated blocks. Few Carpophilus spp., Stelidota sp., and Coleoptems spp. were found on blocks inoculated with Penicillium sp.

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