Plagiotrochus coriaceus (Mayr, 1882)

Host plants. Israel: Q. calliprinos . Elsewhere: Q. ilex and Q. coccifera .

Life history. Known only from the leaf galls of the asexual generation, which are slender, single-chambered swellings protruding on both sides of the leaf, 2 mm in diameter, sometimes in aggregations.

Phenology. The galls develop in spring and summer and adults emerge the following spring. In Israel old galls were observed in May.

Distribution. Israel: Found once in Nahal Sfunim at the foothills of Mt. Carmel. Elsewhere: Western Mediterranean.