Taxonomic study of the genus Aoyuanus Ding & Chen, with descriptions of two new species (Hemiptera, Fulgoromorpha, Delphacidae)

The delphacid planthoppers genus Aoyuanus Ding & Chen, 2001 is reviewed. Two new species, A. spathulus sp. n. and A. varius sp. n., are described and illustrated from China to give the genus three species in total, and the generic characteristics are redefined. A short description and illustrations are also given for A. furcatus. A key to all known species of Aoyuanus based on male genitalia is provided.