Disholandricus lasius (Ashmead 1869) comb nov.

Callirhytis lasius
Andricus lasius
Disholcaspis lasius
Andricus lasius var. areolatus syn. nov.
Andricus lasius var. sublasius syn. nov.

Hosts: Quercus vacciniifolia, chrysolepis

Round, hairy, multilocular, detachable galls on midrib, underside of leaves. Sometimes galls develop on large lateral veins and sometimes the leaf disappears.

[Photos of the gall appear on page 60 of the pdf]

Gall. (Figs 179–181). Round, hairy, multilocular, detachable galls on midrib, underside of leaves. Sometimes galls develop on large lateral veins and sometimes the leaf disappears. Mature galls are dirty beige colored, golden yellow (occasionally with a reddish tinge) with brown hairs when young. Hairs are 3 to 4 mm long; the gall mass up to 10 mm in diameter. Up to six larval chambers are radially located around the point of attachment (Russo 2006).

Biology. The asexual generation is only known, inducing galls on Q. vacciniifolia and Q. chrysolepis. Galls develop in summer-autumn, mature in late autumn; adults emerge from January to March

Range: AZ, 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^©