Donn T. Johnson, dtjohnso@uark.edu, Narinderpal Singh, nxs04@uark.edu, and Barb A. Lewis, balewis@uark.edu. University of Arkansas, Entomology, 319 Agriculture building, Fayetteville, AR
Green June beetles, Cotinis nitida, are attracted to ripening fruit being fed upon by other green June beetles. This results in feeding aggregations that cause economic damage of ripening fruit. In order to identify the attractive components, headspace volatiles were collected from green June beetles feeding on peaches and analyzed by gas chromatograph/mass spectrometer. The relative amount of the major volatiles produced feeding green June beetles were: (R) (+) limonene (79.6%), 2-phenyl-ethanol (7.2%), methyl salicylate (12.0%) and methyl-2- methoxybenzoate (1.2%). This green June beetle blend was added to a wick bottle and insect captures were compared to that from a general scarab blend called Mix-M (TRE 8643) added to a low void disk placed in a Barex tray. Lures of both blends were provided by Trece Inc. The green June beetle blend contained: 2.7 gm of (R) (+) limonene; 0.25 gm of 2-phenyl-ethanol; 0.41 gm of methyl salicylate; and 0.04 gm of methyl-2- methoxybenzoate. The Mix-M blend contained: (R) (+) limonene (24%=0.81 gm); 2-phenyl-ethanol (22.45%=0.78 gm); methyl salicylate (10.15%=0.35 gm); methyl-2-methoxybenzoate (19.89%=0.68 gm); and phenylacetaldehyde (23.51%=0.82 gm). Yellow Japanese beetle traps were baited with a lure containing one or the other blend and set out in three locations in NW Arkansas (3 trap/blend replicates per location). The number of green June beetles and other insect species caught in each trap/blend combination were recorded and compared biweekly. The potential use of each blend will be discussed.
Species 1: Coleoptera Scarabaeidae
Cotinis nitida (Green June Beetle)
Keywords: Lures, Aggregation Pheromones
Recorded presentation