Diversity, richness, and patterns of radiation among gall-inducing psyllids (Hemiptera : Psylloidea) in the orient and eastern Palearctic

Psyllids, or jumping plant lice, which induce diverse and exquisite galls - from simple leaf-margin rolls to complex two-tier galls - in the Orient and eastern Palearctic, have not been comprehensively documented. Considering their richness and diversity, this article consolidates and discusses patterns of congruence and radiation among the psyllids of the two biogeographical regions.