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On Presque Isle and at North East, Erie Co., Pennsylvania the coccinellid Scymnus cervicalis Mulsant was found preying on the leaf form of grape phylloxera, Daktulosphaira vitifoliae (Fitch), on wild grapes, Vitis riparia Michx. Eggs were laid near the entrance to phylloxeran galls, early-stage larvae lived within galls and fed by deflating eggs of the phylloxeran, and 3rd-4th-stage larvae fed on eggs by inserting their heads into gall openings on the upper leaf surface. Pupation occurred on grape foliage, and at 20-22 degrees C the pupal stage lasted an average of 8.1 days. It is estimated that 3 generations were produced from June until phylloxeran eggs became scarce in September-October. Scymnus brullei Mulsant is briefly mentioned as a predator of woolly elm aphid, Eriosoma americanum (Riley), and the woolly aphid, Tetraneura ulmi (L.), on elm at Harrisburg, Pennsylvania.
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