Abstract
Intensive sampling of commercial Concord grape vineyards in North East, PA during 1971–73 revealed the presence of 5 chrysopid species and 5 hemerobiid species. Four species each of Chrysopidae and Hemerobiidae were collected during this period in fencerow areas bordering commercial vineyards, while only 2 chrysopids and one hemerobiid were collected in an abandoned vineyard. Chrysopids collected were, in descending order of abundance, Chrysopa oculata Say, C. carnea Stephens, C. rufilabris Stephens, C. harrisii Fitch, and C. quadripunctata Burmeister. Hemerobiids collected were, in descending order of abundance, Micromus posticus (Walker), M. subanticus (Walker), Hemerobius humulinus L., H. stigmaterus Fitch, and Sympherobius amiculus (Fitch). Neuroptera began activity in vineyards mainly during Aug. and reached a peak in Sept. Vineyard sprays of carbaryl appeared to delay build-up of lacewing populations, although total numbers collected in sprayed vs. unsprayed plots were not significantly different.
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