lo"ma! of Chemical Ecology, Vol. 14, No.4. 1988 IDENTIFICATION OF THORACIC GLAND CONSTITUENTS FROM MALE Xylocopa spp. LATREILLE (Hymenoptera: Anthophoridae) FROM ARIZONA 1 JOHN F. ANDERSEN,") STEPHEN L. BUCHMANN; DAVID WEISLEDER', RONALD D. PLATTNER,' and ROBERT L. MINCKLEy5 2USDA.A.RS Nonhem Regional Research Cenur Peoria. //linois 61604 .. USDA-ARS eart Hayden Bee Research Center 2000 East Allen Rd. Tucson. Arizona 85719 of Ecology and Evolutionary Biology University of Arizona Tucson, Arizona 85721 'Department of Enromology Uni'lltfrsiry of Arizona Tucson. Arizona 85721 (Received March 23. 1987; accepted June 17. 1987) Abstract-Some male carpenter bees (Xyiocopa spp.) posseSE m3ssive pro- podeaJ e:tocrine glands that produce copious quantities of multicomponent blends oftipoidal material. Some of these compounds are volatile. producing a •'flowery" aroma that can be tmsily detected several meters downwind from a territorial male. Chemlcal chara\:teriz3tion oi these secretions showed them to be blends of tcrpenoid compounds or fatty acid derivatives. In X. puncta, the mixture is composed of all aU nesal. and an isomer of 3.7.11 7. IO-dodecatrienal in an approximate 9: 6: 1 ratiO. The secretion of X. micheneri conciJ.ins isopropyl oleate. oleyl alcohol. and methyl palmitate at mateJy 63: 24: 11 : 1. We hypothesize that these compounds act as I Mention of a proprietary product does nOt constitute an endorsement or a recommendation for Its use by USDA.. l Present address: USDA-ARS Stored Products- Research Unit. Department of Entomology, versity of Wisconsin. Madison. Wisconsin. 53706. 1153 l£:, lY8H Plenum Corpora\lon