Plagiotrochus Mayr, 1881

The genus is represented by 14 species in the Western Palearctic, of mostly Mediterranean distribution, which induce galls on all parts of oaks from section Ilex and less commonly Cerris (Nieves-Aldrey 2001; Melika & Abrahamson 2002). Seven species are known in the Eastern Palaearctic (Tang et al. 2016b). Both generations are known for most species, the majority of which are associated only with evergreen oaks. Adults resemble those of Chilaspis . Three species are known from Israel on Q. calliprinos, one of which has been found only once.