Andricus reniformis

Quercus chrysolepis, vacciniifolia
Stem galls
Kidney-shaped on side of twig. Poly.

Andricus reniformis
(Callirhytis reniformis)*
Kidney-stem-gall wasp
[Page 141]

Hosts: Quercus chrysolepis, vacciniifolia, palmeri

This wasp induces detachable, polythalamous, kidney-shaped summer galls on canyon live, huckleberry, and Palmer's oaks.

Disholandricus reniformis (McCracken & Egbert, 1922) comb. nov.

Andricus reniformis
Disholcaspis reniformis

Hosts: Quercus chrysolepis, vacciniifolia

[A photo of the gall appears on page 64 of the pdf]

Gall. (Fig 193). The detachable, multilocular, kidney-shaped stem galls are mottled-red, yellow and green when young, turning to a tan color when mature. Galls are up to 30 mm long and 15 mm in diameter. Larval chambers are located radially around the central core. Galls produce honeydew (Russo 2006; Nicholls et al. 2017).

Biology. Only the asexual generation is known, inducing galls on Q. chrysolepis and Q. vacciniifolia. Galls develop in summer; adults emerge only 2–3 years after the galls are formed

Range: CA