Druon rusticum Kinsey, 1937, comb. rev.

Druon rusticum Kinsey, 1937: 64, female, gall.
Andricus rusticum (Kinsey): Weld, 1952a.

Gall (Fig. 221). Wool covered, cream-coloured white to tan and russet brown galls; the individual hairs short, straight, hardly covering the larval cells and obviously tufted about each individual cell; making continuous but very irregular, narrowly elongate masses up to 25 mm, average 13 mm long. The larval cells only 1.5 mm long, elongate, 4 to 10 in one cluster.

Biology. Only the asexual generation is known, which induces galls on Q. magnoliifolia (= Q. macrophylla; Section Quercus, Series Leucomexicanae); galls mature in late autumn; adults emerge the following year in April– May (Kinsey 1937).

Distribution. Southwestern Mexico, Guerrero (Kinsey 1937).

- 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^©