Pachymetopius, Matsumura, 1914

Wei, Xingtao, Xing, Jichun & Webb, Michael D., 2019, Key to species of the genus Pachymetopius Matsumura (Hemiptera: Cicadellidae: Stegelytrini) with description of a new species from China, Zootaxa 4571 (2), pp. 290-294 : 291

Key to species (males) of Pachymetopius , modified from Wei et al. (2008)

1. Anteclypeus narrow basally, thereafter gradually and evenly broadening from base to sub-apex, then abruptly expanded apically .......................................................................................................................................................................................... P. decoratus

- Anteclypeus broadly convex basally ( Fig. 5 ) .................................................................................................................................... 2

2. Aedeagus without lateral processes................................................................................................................................................... 3

- Aedeagus with pair of lateral processes ............................................................................................................................................ 4

3. Aedeagal shaft narrow with lateral margin sinuate in posteroventral view ................................................................... P. bicaudatus

- Aedeagal shaft broad, strongly constricted subbasally in posteroventral view.............................................................. P. bicornutus

4. Aedeagal processes distinctly shorter than shaft ( Figs. 9-10 ) ........................................................................................................... 5

- Aedeagal processes similar in length to shaft ................................................................................................................................... 6

5. Aedeagal shaft constricted subapically in ventral view ( Fig. 9 ); outer apical style process narrow ( Fig.12 ); pygofer side with inner process hook shaped ( Fig. 6 ) ................................................................................................................................. P. falcatus sp. nov.

- Aedeagal shaft not constricted subapically in ventral view; outer apical style process broad; pygofer side with inner process lobelike ............................................................................................................................................................................... P. nanjingensis

6. Aedeagal processes with denticles; pygofer process bifurcate apically ............................................................................. P. dentatus

- Aedeagus processes without denticles; pygofer process not bifurcate apically ................................................................. P. curvatus

Figures

FIGURES 1–5. Pachymetopius falcatus sp. nov., 1. ³, dorsal view; 2. ³, lateral view; 3. ³, face, lateral view; 4. ³, head and thorax, dorsal view; 5. ³, face, ventral view.

FIGURES 6–12. Pachymetopius falcatus sp. nov., 6. Male pygofer side, lateral view; 7. Valve, ventral view; 8. Subgenital plate, ventral view; 9. Aedeagus, ventral view; 10. Aedeagus, lateral view; 11. Connective, dorsal view; 12. Style, dorsal view.