New species of oak gallwasps from Taiwan (Hymenoptera: Cynipidae: Cynipini)

Abstract

Three new species of oak gallwasps from Taiwan are described: Andricus songshui and Andricus pseudocurvator, both known to induce integral leaf galls on Quercus serrata, and Plagiotrochus glaucus which induces stem swelling-like galls on Quercus glauca. Galls and adults of new species are described; data on the diagnosis, distribution and biology of the new species and a key to the Taiwanese Andricus species are also given.