Description of two new species of the leafhopper subgenus Pediopsoides (Pediopsoides) (Hemiptera, Cicadellidae, Macropsinae) from Guangxi Province, Southern China

Abstract Two new species of the Macropsinae leafhopper subgenus Pediopsoides (Pediopsoides) Matsumura, 1912, Pediopsoides (Pediopsoides) damingshanensis Li, Dai & Li, sp. n. and Pediopsoides (Pediopsoides) tishetshkini Li, Dai & Li sp. n., are described and illustrated from Guangxi Province of southern China. A key to males is provided to distinguish the species of the subgenus along with a map showing the distribution of the new species.

In the present paper, 2 new species, Pediopsoides (Pediopsoides) damingshanensis Li, Dai & Li sp. n. and P. (P.) tishetshkini Li, Dai & Li sp. n., from Guangxi province (included in the oriental region) of southern China are described and illustrated, a key to species of the nominate subgenus are provided, along with a map showing the distribution of the new species.

Material and methods
Terminology used in describing the structures follows Hamilton (1980). External morphology and dissected male genitalia were observed under an Olympus SZ2-ILST stereoscopic microscope and YS 100 microscope. Habitus images of adults were obtained by using a KEYENCE VHX-1000 system and were processed using the software Adobe Photoshop CS6. Hand drawings of the male genitalia were processed with Adobe Illustrator CS6. The body length is measured from the apex of the head to the apex of the forewings and are given in millimeter (mm.).
The type specimens of the new species are all deposited in the Institute of Entomology, Guizhou University, Guiyang, China (GUGC).
Remarks. The nominate subgenus was characterized by Hamilton (1980) and Li et al. (2012). It can be distinguished by the following combination of features: pronotal striations oblique, forewings with two anteapical cells, dorsal connective freely attached (fused in subgenus P. (Celopsis)) to tenth tergite, and male pygofer without multifid or additional spines [male pygofer spine bifid or with rounded lobe on inner margin basally in subgenus P. (Sispocnis), a small secondary pygofer spine posteriorly in subgenus P. (Nanopsis), and male pygofer spine are multifid in subgenus P. (Kiamoncopsis)].
Female. Unknown.  Description. Body coloration. Color (Figs 4-6) similar to P. (P.) damingshanensis but darker; with large black spot adjacent antennal pit and basal parts of fore femur and coxa, middle and hind coxa marked with dark brown.
External morphology. As in P. (P.) damingshanensis but head more narrower than pronotum and crown more arcuate forward; face (Fig. 6), in lateral view, slightly inflated; ocelli with their spacing about 8 times than that of ocellus to adjacent eye; scutellum (Fig. 4)  2+1; hind tibia with 7 macrosetae on AD row, 6 on AV row, 11 on PD row, dense and slender on PV row.
Male genitalia. Similar to P. (P.) damingshanensis but pygofer (Fig. 14) shorter, style ( Fig. 16) with lateral lobe shorter and apex bearing a spine-like process and connective (Figs 17-18) more robust in lateral view. Aedeagus (Figs 19-20) with basal apodeme reduced; preatrium moderately long; shaft in lateral view relatively straight, evenly tapered to sharply pointed and upturned apex; in ventral view shaft similar in width throughout length with rounded apex; gonopore apical on ventral margin. Dorsal connective (Fig. 21) strongly developed "S" shaped, medially produced into bifurcate process, two dorsal branches widely spaced and tapered to acute apex.

Remarks.
The new species is similar to P. (P.) damingshanensis sp. n. but can be distinguished by its darker colour and differences in the male genitalia (see description). Etymology. This species is named in honour of Dr. Dmitri Yu. Tishechkin for his excellent contribution to Macropsis systematics of the Palaearctic region, and invaluable help to the first author.

Key to species (males only) of the subgenus Pediopsoides (Pediopsoides)
Male P. (P.) formosanus (Matsumura) is not known, hence not included in the key. The present key is modified from Li et al. 2012 Aedeagal shaft either of uniform width (Fig. 11) or narrowed subapically (Fig. 19) .