PROC. ENTOMOL. SOC. WASH. 89(3), 1987, pp. 500-501 SEX ATTRACTANT FOR SCOP ARIA BIPLAGIALIS (LEPIDOPTERA: PYRALIDAE) H. G. Davis, L. M. McDonough, and D. C. Ferguson (HGD, LMM) Yakima Agricultural Research Laboratory, Agricultural Research Ser-vice, USDA, 3706 West Nob Hill Boulevard, Yakima, Washington 98902; (DCF) Sys-tematic Entomology Laboratory, Agricultural Research Service, BBII, USDA, % National Museum of Natural History, NHB 168, Washington, D.C. 20560. riZ)5/racr. — (Z)-l 1-Hexadecen-l-ol acetate was discovered to be a sex attractant for Scoparia biplagialis. This is the first example of a sex attractant for Scopariinae. During the last 1 5 years, a multitude of sex pheromones of insects have been iden-tified (Inscoe, 1982). Sex pheromones are used in crop protection programs as attrac-tants in traps which indicate the presence and change in population level of a target economic species. Also, sex pheromones are useful for studying taxonomic relationships (Roelofs and Brown, 1982). In 1 980, while conducting other research, we noted many specimens of a small species of moth in one of our traps, and we sub-sequently identified the species as Scoparia biplagialis Walker (Pyralidae: Scopiari-inae). In 1981 and 1982 we conducted fur-ther tests to confirm our observations and to determine the response of S. biplagialis to different amounts of the attractive com-pound. Here we report the results of the tests conducted in 1981 and 1982. Materials and Methods Lures were prepared by adding 1 00 ^1 of a dichloromethane solution of (Z)-l 1-hex-adecen-1-ol acetate to No. 1 red rubber sep-ta (West Co., Phoenixville, PA). The amount of acetate used was 0.0 and 1.0 mg per sep-tum in 1981 and 0.0, 0.1, 1.0, and 10.0 mg per septum in 1982. Lures were placed in the bottom of wing traps (Howell, 1972) which had been coated with polyisobutyl-ene to provide a sticky surface (Pherocon IC® traps, Zoecon Corp., Palo Alto, CA). Traps were hung at a height of 2 m in filbert trees. In 1981, one control and one test trap each were placed in two different abandoned orchards (Sherwood in Washington County and Dundee in Yamhill County) in the Wil-lamette Valley, Oregon from 1 July to 27 August. In 1982 five replicates of the four treatments were arranged randomly along a row of filbert trees in the Sherwood orchard from 6 July to 24 August. In 1981, trap catches were recorded weekly and in 1982 on 22 July and 24 August. The 1982 data were analyzed by Duncan's New Multiple Range Test {P = 0.05). Insects were removed from the sticky traps Table 1 . Number of S. biplagialis captured in traps containing the lure (Z)-1 1 -hexadecen-1 -ol acetate, dur-ing tests conducted from 6 July to 24 August 1982 in the Willamette Valley. Oregon. Each dosage was tested with 5 replicates. Means followed by the same letter are not significantly different; ANOVA and DMRT (^=.05).
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