A new species of the leafhopper genus Calodia Nielson, 1982 (Hemiptera, Cicadellidae, Coelidiinae) from China, with a key to Chinese species

Abstract


Introduction
The Oriental leafhopper genus Calodia (Cicadellidae: Coelidiinae: Coelidiini) was erected by Nielson (1982) based on C. multipectinata as its type species from Malaysia. The genus encompasses 60 known species at present, of which 22 species are found in China (Nielson 1982(Nielson , 1991(Nielson , 1996Li 1989;Zhang 1990Zhang , 1994Li and Wang 1991;Cai and Kuoh 1993;Xu and Kuoh 1999). Recently, we discovered one new Calodia species from China, which is described, illustrated and mapped in the present paper. A key to the Chinese coelidiine genera and species of Calodia is also provided.

Material and methods
The morphological terminology adopted herein follows Nielson (1982). Photos of external morphology were obtained by Keyence VHX-1000 system. Illustrations of male genitalia were drawn using an Olympus CX41 stereomicroscope, then enhanced by Adobe Illustrator CS6. All pictures were labelled and plates composition in Adobe Photoshop CS5. The type specimens are deposited in the Institute of Entomology, Guizhou University, Guiyang, China (GUGC).

Key to tribes and genera of Coelidiinae from China
(modified from Zhang 1994) 1 Ventral side of aedeagus with paraphysis; aedeagus simple, without process, gonopore apical (Thagriini  Nielson, 1982 Diagnosis. This genus can be separated from the other Chinese coelidiine genera mainly by the asymmetrical aedeagus without ventral paraphysis and with two or more apical or subapical processes (see key to genera).
Male genitalia. Pygofer with caudal lobe broadly triangular in lateral view, caudoventral margin inturned with a small internal digitate process (Fig. 7). Segment X without process. Subgenital plate long, apex with short fine setae (Fig. 8). Connective Y-shaped with stem very short (Fig. 9). Style short and simple, apophysis folded at midlength, narrowed distally to rounded apex (Figs 9, 10). Aedeagal shaft asymmetrical, elongate, distally upturned and tapered to acute apex in lateral view with numerous small spines and fine teeth, with two large subapical processes arising on same side, lower process about twice length of other bifurcate apically with inner branch also bifurcate, upper process with margin serrate in lateral view; gonopore large, subapical, situated laterally (Figs 11-13).
Etymology. The species name dentispina, refers to the dentate margin of the shorter aedeagal process.
Remarks. This new species differs from other members of this genus by the shape and configuration of the aedeagal processes.