Parallygus Melichar

Dai, Wu & Zhang, Yalin, 2012, Revision of the Oriental leafhopper genus Parallygus Melichar (Hemiptera: Cicadellidae: Deltocephalinae) with description of new species, Zootaxa 3157, pp. 41-53 : 45

Key to species of Parallygus Melichar

1. Aedeagal shafts with basal and ventral processes ( Figs 4 F, 5F–G)............................................... 2

- Aedeagal shafts without basal and ventral processes ( Figs 3 D–E, 6B–C, 7J–K)..................................... 3

2. Ventral process of aedeagal shaft strongly curved in distal 0.2 ( Fig. 4 F) ( Sri Lanka)............... P. divaricatus Melichar

- Ventral process of aedeagal shaft straight ( Fig. 5 F) ( China: Zheijiang, Guangxi, Hunan, Taiwan; India: Matheran)............................................................................................ P. guttatus Matsumura

3. Aedeagal shafts gradually narrowed to attenuated apex ( Figs 6 C, 7K)............................................ 4

- Aedeagal shafts abruptly narrowed at midlength and with caudally projecting conical process ( Fig. 3 D).................................................................................. P. burmindicus Viraktamath & Webb , sp. nov.

4. Pygofer with membranous rounded dorsally directed lobe ( Fig. 7 D); aedeagal shafts strongly convoluted, each shaft in lateral aspect slender at base then gradually narrowed distally ( Figs 7 J–K) ( India: Himachal Pradesh, Meghalaya, West Bengal).................................................................... P. rameshi Viraktamath & Webb , sp. nov.

- Pygofer lacking dorsally directed membranous lobe but with subcaudal and caudal processes in lateral aspect ( Fig. 6 A); aedeagal shaft less strongly convoluted, each shaft stout basally in lateral view, more strongly narrowed in distal 0.33 length ( Figs 6 B–C) ( China: Anhui)..................................................... P. jiuhuaensis Dai & Zhang , sp. nov.

Figures

FIGURE 3. Parallygus burmindicus Viraktamath & Webb, sp. nov. A. Head and thorax, dorsal view; B. Male genital capsule, lateral view; C. Valve, subgenital plates and styles, dorsal view; D. Aedeagus and connective (part) lateral view; E. Aedeagus, ventral view; F. Forewing venation.

FIGURE 4. Parallygus divaricatus Melichar. A. Male genital capsule; B. Pygofer process, ventral view; C. Connective, anteroventral view; D. Sclerotized bridge across pygofer lobes, posterior view; E. Style and connective, posterodorsal view; F. Aedeagus, lateral view. Free hand diagrams not to scale.

FIGURE 5. Parallygus guttatus Matsumura, specimen from India. A. Forewing venation; B. Male genital capsule; C. Pygofer process, dorsal view; D. Subgenital plate, lateral view; E. Style, dorsal view; F. Aedeagus, lateral view; G. Aedeagus, posteroventral view; H. Connective, anterior-ventral view; I. Subgenital plates and styles, dorsal view.

FIGURE 6. Parallygus jiuhuaensis Dai & Zhang, sp. nov. A. Male genital capsule, lateral view; B. aedeagus, lateral view; C. Aedeagus, dorsal view; D. Style, dorsal view; E. Connective, anteroventral view.

FIGURE 7. Parallygus rameshi Viraktamath & Webb, sp. nov. A. Head and thorax, dorsal view; B. Face; C. Forewing venation; D. Male genital capsule, lateral view; E. Male genital capsule, ventral view; F. Subgenital plate, lateral view; G. Female abdominal apex, ventral view; H. Style, dorsal view, I. Style, lateral view, J. Aedeagus and Connective, ventral view; K. Aedeagus, lateral view.