Two new species of Kermes (Homoptera: Coccinea: Kermesidae), with a dey to the young adult females of known species of Kermes from China

Two new species of Kermesidae, Kermes orientalis Liu and Shi and K. flavus Liu, are designated. Morphological characters of post-reproductive and teneral young adult females, as well as the first instars (crawlers) are described and illustrated. A key to the young adult females of the genus from China is given. Type materials are deposited in the Insect Collection, Section of Entomology, Department of Entomology, Shandong Agricultural University, Shandong; Insect Collection, Institute of zoology, Chinese Academy of sciences, Beijing, China; and British Museum (Natural History), London, England