Phylloxera spinuloida Pergande, n. sp.

The galls of this species, as already remarked, are very similar and closely related to those of spinosa, for which, without comparison of the migratory females, they might easily be mistaken. They are, as a rule, more regularly globular, or but slightly conical, covered with numerous irregular, more or less radiating, low ridges, which are rather plentifully provided with irregular, long, fuzzy, fleshy spines or filaments. They grow generally upon the petiole of the leaves, which they often almost completely encircle, causing, at 'the point of junction with the petiole, a curve or bend. They also occur on the midrib of the leaves. When mature each gall bursts at the apex in a more or less irregular opening. The diameter of those examined varied from 5-15 mm. The color appears to be quite uniformly greenish-yellow, or brownish-yellow on one side.

- Theo. Pergande: (1904) North American Phylloxerinae affecting hicoria (Carya) and other trees^©

Reference: https://www.biodiversitylibrary.org/item/114693#page/69/mode/1up