Burnettweldia corallina (Bassett 1890), comb. nov.

Holcaspis corallinus
Disholcaspis corallina
Cynips corallina

Hosts: Quercus douglasii

[A picture of the gall is given on page 32 of the pdf]

Gall. (Fig 93). Detachable, monolocular gall occurring singly or in clusters of 2–4 at the base of leaf petioles. The gall is orange, yellow, or reddish when mature, 10–11 mm wide, with club-like, 2 mm long projections; in some galls the surface projections are reduced to rounded bumps or tubercles. The surface of the gall is delicately pubescent. Parenchyma of the gall is thick, hard, crystalline, reddish pink; the larval chamber thick-walled, oval, located at the gall base, above point of attachment. Young galls are yellow-green, growing directly from young stems, coated with velvety, whitish stellate pile. Over time a black sooty mould grows on mature galls, and they become hard and lignified (Burnett 1977, Russo 2006).

Biology. Galls develop in summer, mature in November; adults emerge aftersoon. Galls on Q. douglasii (Burks 1979, authors).

Distribution. USA: California (Burks 1979); San Joaquin Valley, CA (Burnett 1977)

- 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^©