Cerroneuroterus minutulus (Giraud, 1859)

Host plants. Israel: Q. libani . Europe: Q. cerris .

Life history. Known only from the leaf galls of the asexual generation, which are found on veins, predominantly on the lower side of the lamina, elliptical, up to 2 mm in diameter, covered by small projections, usually solitary but sometimes in aggregations. Young galls are pale, turning green to dark red and purple when mature.

Phenology. Galls are first observed in August and mature in November. Larvae overwinter inside the galls in the leaf litter and adults emerge early the following spring.

Distribution. Israel: Mt. Hermon, 1780 m.a.s.l. Elsewhere: Central Europe, Turkey Balkan, Northern Africa.