Phylloxera georgiana Pergande

Galls occurred singly or in clusters on tender twigs and petioles of an unidentified Carya sp., presumably at Georgiana, Florida (Pergande 1904). They were similar to those of Ph. devastatrix; more-or-less globular, with a short nipple, greenish yellow (sometimes reddened on one side), or wholly dark red, 5-10 mm in diameter. Alatae (BL 0.8-1.0 mm, with orange abdomen) differ from P. devastatrix in characters of the wings and antennae (see Pergande 1904).

Phylloxera georgiana

Carya sp.
Petiole or twig galls
Medium, smooth, growing in clusters, usually with a short, stout nipplelike projection on one side, diameter 5 to 10 mm.

Phylloxera Georgiana Pergande, n. sp.

The galls of this species closely resemble those of Ph. devastatrix, being of the same shape, size and color; but the winged form is quite different and may readily be distinguished by its much paler wings and venation and particularly by the shorter antennae and much larger sensorial membranes of the third joint.

The galls grow either singly or in close clusters upon the tender twigs and petioles and often recall in appearance the galls of Cynips q.-ficus. Those growing in clusters are more or less irregular in shape, whereas those growing singly are quite globular and frequently provided with a short nipple. Their size varies from three-sixteenths to one-half inch in diameter; color either uniformly greenish-yellow, sometimes reddish on one side or around the base, or entirely dark red.

Phylloxera georgiana

Globular or irregular; occurs singly or in clusters on petioles or stems; greenish-yellow or red on base or one side; diameter 5.0–10.0 mm; opening with or without a short nipple.