A new species of Leofa (Prasutagus) Distant (Hemiptera: Cicadellidae: Deltocephalinae: Chiasmini) from Thailand with a checklist of Leofa Author Duan, Yani Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Entomological Museum, Northwest A & F University, Yangling, Shaanxi Province 712100, China. & School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China. Author Zhang, Yalin Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Entomological Museum, Northwest A & F University, Yangling, Shaanxi Province 712100, China. Author Zahniser, James N. Prairie Research Institute, Illinois Natural History Survey, 1816 S. Oak St., Champaign, IL 61820. text Zootaxa 2012 2012-11-02 3537 53 58 journal article 1175-5326 1043B04A-C502-4A77-B4BA-2A20A9398B67 Key to species of Leofa ( Prasutagus ) Distant 1. Ground color black with white markings (Plate I)............................................... L . ( P .) pulla sp. n. - Ground color yellow to ochraceous........................................................................ 2 2. Pygofer process with two ventroapical teeth....................................................... L. ( P. ) yangae - Pygofer process cheliform or hooked ventroapically........................................................... 3 3. Pygofer process cheliform................................................................... L. ( P. ) forcipata - Pygofer process hooked ventroapically..................................................................... 4 4. Apex of aedeagal shaft tapered in lateral view...................................................... L. ( P. ) curtula - Apex of aedeagal shaft expanded in lateral view.............................................................. 5 5. Basal triangular flanges of aedeagus wider and larger than apical flange............................. L. ( P. ) palearctica - Basal and apical triangular flanges of aedeagus nearly same width................................... L. ( P. ) pulchella