Phylloxera williamsi Hamilton, sp. n.

Hosts: Carya cordiformis

Galls: Oval and convex, yellowish-green, and with long white pubescence on both sides of leaf; slightly more convex above than below. Diameter 2.2 mm; below pubescent and with a protruding slit-like opening fringed with white pubescence.

[type specimen collected in May]

[A figure of the gall appears on page 154 of the pdf. A discussion of how to distinguish this gall from the similar P floridana appears on page 112.]

Range: WV