Feron roberti Melika, Nicholls & Stone, sp. nov.

Gall (Fig. 310). Pinkish leaf galls, turret-like with bristles all around, covered with more or less crystalline, fine, hair-like fibers, similar to F. sulfureum, F. tibiale and F. tubifaciens, however, in larger clusters (20+ galls) up to 20 mm wide and 25–30 mm long.

Biology. Only the asexual generation is known, which induces leaf galls on Q. rugosa (section Quercus, subsection Leucomexicana). Galls mature in the autumn dropping only with the leaf; adults emerge next year, in late March–April.
Distribution. USA, Arizona.