| Sumario: | The following four new species of leafhoppers are described and illustrated: Jikradia dentata n. sp. and J. trispinata n. sp. from Guatemala, J. variabilis n. sp. from Belize, and J. exilis n. sp. from Costa Rica. Jikradia basipendula Nielson and J. krameri Nielson are new records for Guatemala. Belize is a new record for the genus. A record of the first introduction of the genus in the Old World is reviewed. A revised key to the known species is provided with a review of its possible origin. A checklist of all known species is also given. Mervin W. Nielson,1 Richard S. Zack², Francesco Poggi³ and Herbert Nickel4 1Retired, former Affiliate Faculty, Monte L. Bean Life Science Museum, Brigham Young University, Provo, UT 84606 USA; mwnielz@gmail.com 2M. T. James Entomological Collection, Department of Entomology, Washington State University, Pullman, WA 99164-6382 USA; zack@wsu.edu ³ Francesco Poggi; erythria@gmail.com 4 Herbert Nickel, Ehrengard-Schramm-Weg 2, 37085 Göttingen, Germany; herbertnickel@gmx.de
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