. Annual report. New York State Museum; Science -- New York (State); Plants -- New York (State); Animals -- New York (State). 48 NEW YORK STATE MUSEUM Medium, growing in larger or smaller clusters and apparently deformations of flower and leaf buds, splitting when mature into four or more broad bracts, surface smooth, diameter 3 to 15 mm. Pergande '04, p. 248 Aphid. Phylloxera devastatrix Perg. Medium, smooth, growing in clusters, usually with a short, stout nipplelike projection on one side, diameter 5 to 10 mm. Pergande '04, p. 249 Aphid. Phylloxera georgiana Fig. 48. Cecid- o m y i a
. Annual report. New York State Museum; Science -- New York (State); Plants -- New York (State); Animals -- New York (State). 48 NEW YORK STATE MUSEUM Medium, growing in larger or smaller clusters and apparently deformations of flower and leaf buds, splitting when mature into four or more broad bracts, surface smooth, diameter 3 to 15 mm. Pergande '04, p. 248 Aphid. Phylloxera devastatrix Perg. Medium, smooth, growing in clusters, usually with a short, stout nipplelike projection on one side, diameter 5 to 10 mm. Pergande '04, p. 249 Aphid. Phylloxera georgiana Fig. 48. Cecid- o m y i a sp. Bud gall on Corylus, ai737- (Original) Fig. 49. Spiny witch-hazel gall aphid. Hamame- listes spinosus Shim. Pseudo galls on birch leaves. (After Pergande) Large, oval, smooth, growing on the petioles, a slight, central depression covered with short hairs, length 20 mm, diameter 10 mm. Pergande '04, p. 250 Aphid. Phylloxera subelliptica Shim. Globular or irregular, terminating in a toothlike nipple and occurring on tender twigs, petioles or ribs of leaves, often confluent, smooth, diameter 2 to 8 mm. Pergande '04, p. 251 Aphid. Phylloxera perniciosa Perg. Reniform, petiole or midrib gall, a transverse slit dividing the gall into two halves, diameter 2 to 15 mm. Pergande '04, p. 257 Aphid. Phylloxera caryaeren Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum; University of the State of New York. Albany, N. Y. : University of the State of New York
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