Druon quercuslanigerum (Ashmead, 1881), comb. nov.

Cynips q.lanigera Ashmead, 1881: xiii, female, gall.
Andricus (Andricus) lanigera Ashmead, 1885: 295 [unjustified emendation].
Andricus laniger (Ashmead): Weld, 1951: 634.
Andricus quercuslanigera (Ashmead): Burks, 1979: 1088.

Gall. Asexual generation galls (Fig 162–163). Creamy white wool-covered gall usually on the underside of the leaf midrib, occasionally also on twigs; whole gall 1.0–7.0 mm in diameter and 2–3 mm high. Pubescence yellows slightly in older galls. Individual hairs making up the wool are straight and 0.5–2.0 mm long. The interior of the gall contains pale brown larval chambers that can be solitary or in groups of 3–6 along the midrib.

Biology. Alternate asexual and sexual generations are known. The asexual leaf galls (also rarely on twigs) develop in autumn and winter, sexual galls on catkins in spring (Hood et al. 2018); both generations develop on Q. minima and Q. virginiana and asexual galls have also been found on Q. fusiformis, Q. geminata, Q. oleoides (all Section Virentes).

Distribution. USA: Georgia, Florida, Alabama, Missouri, Louisiana, Texas, and Mexico: Hidalgo. Also introduced with its host plant Q. virginiana in California (Stockton) and Chihuahua (Chihuahua City).

- Victor Cuesta-Porta, George Melika, James Nicholls, Graham Stone, Juli Pujade-Villar: (2022) Re-establishment of the Nearctic oak cynipid gall wasp genus Druon Kinsey, 1937 (Hymenoptera: Cynipidae: Cynipini), with description of five new species^©