Review of Empoasca (Distantasca) Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini), with description of two new species from China

摘要

A key to known species of the subgenus Empoasca (Distantasca) is provided. Two new species, E. (Distantasca) latibasis Zhang and Liu sp. n. and E. (D.) tuberculata Zhang and Liu sp. n., are described and illustrated from Yunnan Province (SW China). The leafhopper subgenus Empoasca (Distantasca) was first described as a separate genus by Dworakowska (1972), with Empoasca terminalis Distant (1918) as the type species. Dworakowska (1972) found Distantasca has the same structure and wings venation as inEmpoasca Walsh, but male genital segments different. Then Distantasca was subsequently downgraded to a subgenus of Empoasca Walsh (Dworakowska & Viraktamath, 1975). It is primarily characterized by the well developed anal tube appendages and the long andnarrow subgenital plates with macrosetae not reaching the tip of the plate and two bands of long, hair-like setae on the lateral surface, one near the mid-length of the plate and one just before the apex, often separated by a few thin but short setae. Empoasca (Distantasca) has been studied previously by Dworakowska (1972, 1977, 1980, 1981, 1994), 10 new species have been illustrated in all, and Qin & Zhang (2007) described 10 species, including 2 new species.