THREE NEW SPECIES OF THE GENUS Petalocephala FROM CHINA (HOMOPTERA:CICADELLOIDEA:LEDRIDAE)
片头叶蝉属三新种：（同翅目：叶蝉总科：耳叶蝉科）

The present paper deals with three new species of the genus Petalocephala Stal, 1853, collected from Yunnan and Sichuan Provinces, China. The type specimens are deposited in the Anhui Agricultural College. 1. Petalocephala arcuata Cai et Kuoh, sp. nov. (fig. 1) This species is closely similar to Petalocephala chlorophana Kuoh in the size, colour and shape of the body, but differs from the latter in the forewing without a fuscus spot on dick, in the posterior margin of the last abdominal sternium of male convex, and in the shape of every element of male genitalia. ?, Length. 8.7 mm; incl. teg. 10.0 mm; of crown of head 1.5 mm, Width of head 2.8 mm. Holotype , paratype 1, Jinghong Co., Yunnan Prov., May 20, 1974, coll. by Wei Chong-Shen. 2. Petalocephala fuscomarginala Cai et Kuoh, sp. nov. (fig. 2) This species is allied to the foregoing new species, but is easily separated by the relatively big size, by the apical portion of costal margin fuscus, and by the structure of every clement of male genitalia. ?, Length. 10.0 mm; incl. leg. 10.8 mm; of crown of head 1.6 mm, Width of head 3.0 mm. Holotype , Jinghong Co., Yunnan Prov., May 25, 1974, coll. by C. S. Wei. 3. Petalocephala ochracca Cai ct Kuoh, sp. nov. (fig. 3) This species can be readily distinguished from other species in the genus by the smaller size, the shape of body slender, by the pygofer with a hook-like process, and by the apical part of aedeagus with two carinae. ?, Length. 8.5 mm; incl. teg. 9.4 mm; of crown of head 1.5 mm, Width of head 2.6 mm. Holotype , Chengdu, Sichuan Prov., Aug. 15, 1955, coll. by Kuoh Chung-Lin.