Cofana

Yang, Mao-Fa, Meng, Ze-Hong & Li, Zi-Zhong, 2015, Taxonomic study on the leafhopper genus Cofana Melichar (Hemiptera: Cicadellidae: Cicadellinae) from China, with description of two new species, Zootaxa 3994 (3), pp. 253-264 : 254

Key to Chinese species of Cofana

1. Anterior margin of crown without lateral black spots, apex of scutellum with black spot; head narrower than pronotum............................................................................................ C. albida (Walker)

- Anterior margin of crown with lateral black spot on each side, apex of scutellum without black spot; head equal to or wider than pronotum........................................................................................ 2

2. Head without median apical black spot, pronotum with three green maculae................... C. unimaculata (Signoret)

- Head with median apical black spot, pronotum without macula or with maculae not green............................ 3

3. Forewing green, costal margin yellow-white and translucent, apical membrane distinct............. C. subvirescens (Stål)

- Forewing white, gray or grayish brown, veins brown or dark brown, apical membrane indistinct....................... 4

4. Apex of aedeagus with paired hooked denticles; apical 1/3 of aedeagal shaft tapering and bottleneck-shaped in ventral view...................................................................................... C. yasumatsui Young

- Apex of aedeagus without denticles; aedeagal shaft tapering or parallel sided and apical part not bottleneck-shaped in ventral view................................................................................................ 5

5. Aedeagal shaft smooth................................................................................. 6

- Aedeagal shaft with small tumors, carinae or rugae.......................................................... 7

6. Crown with small black medial spot; aedeagal shaft approximately parallel sided in lateral view, aedeagal dorsal apodeme shorter than shaft....................................................................... C. spectra (Distant)

- Crown with big black medial spot; aedeagal shaft broad and short, widening posteriorly in lateral view, aedeagal dorsal apo- deme longer than shaft....................................................................... C. lata Young

7. Aedeagal shaft bulbous in lateral view..................................................................... 8

- Aedeagal shaft not bulbous in lateral view.................................................................. 9

8. In lateral view, apical half of aedeagal shaft bulbously expanded, surface with small tumors, dorsal apodeme longer than shaft..................................................................................... C. lineata (Distant)

- In lateral view, basal portion of aedeagal shaft bulbously expanded, narrowed towards apex, with serrated dorsal and ventral margin, caudal region denticulate near base, dorsal apodeme as long as shaft......................... C. nigrilinea (Stål)

9. Aedeagal shaft with small dense carinae on surface, median portion with ventral triangular membranous process, apex divided into two lobes; dorsal apodeme shorter than shaft; body length less than 7.5 mm........ C. cheni Yang, Meng & Li , sp. nov.

- Aedeagal shaft with apical 2/5 depressed laterally and transversely rugose, basal half smooth, apical portion curved dorsally, forming nipple-shaped process; dorsal apodeme longer than shaft; body length more than 8.5 mm................................................................................................. C. nii Yang, Meng & Li , sp. nov.