Disholandricus truckeensis (Ashmead, 1896), comb. nov.

Holcaspis truckeensis
Disholcaspis truckeensis
Andricus truckeensis

Hosts: Quercus chrysolepis

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

Gall. (Figs 194–195). Hard, multilocular, smooth, potato-shaped stem galls, usually on terminal twigs. The gall is tan-colored when mature, slightly glossy, round- to oval-shaped, up to 60 mm long, 30 mm in diameter.

Biology. Only the asexual generation is only known, inducing galls on Q. chrysolepis (Burks 1979). Galls mature in autumn; adults emerge in January-February.

Range: CA

- George Melika, Juli Pujade-Villar, James Nicholls, Victor Cuesta-Porta, Crystal Cooke-McEwen, Graham Stone: (2021) Three new Nearctic genera of oak cynipid gall wasps (Hymenoptera: Cynipidae: Cynipini): Burnettweldia Pujade-Villar, Melika & Nicholls, Nichollsiella Melika, Pujade-Villar & Stone, Disholandricus Melika, Pujade-Villar & Nicholls; and re-establishment of the genus Paracraspis Weld^©