sp. n. (Hymenoptera, Eulophidae), a New Invasive Pest and Its Host Plants in China.

species have become one of the most commonly planted trees worldwide, including China, due to their fast growth and various commercial applications. However, the productivity of plantations has been threatened by exotic invasive insect pests in recent years. Among these pests, gall inducers of the genus of the Eulophidae family are among the most important invasive species in plantations. We report here for the first time the presence of a new invasive gall wasp, sp. n., in Guangzhou, China, which also represents the first species of the genus reported from China. The identity of the new species was confirmed by an integrative approach combing biological, morphological and molecular evidence. The new species is described and illustrated. This wasp induces galls only on the leaf blade surface of four species: , × , and Our preliminary observation showed that could complete a life cycle on in approximately 2 months under local climatic conditions (23.5-30 °C). Considering the severe damage it may cause to production, further investigations of its biology and control are urgently needed in China.