Gergithus (Maculergithus), 2016

Constant, Jérôme & Pham, Hong-Thai, 2016, Maculergithus, a new subgenus in Gergithus Schumacher, 1915 with two new species from northern Vietnam (Hemiptera: Fulgoromorpha: Issidae), European Journal of Taxonomy 198, pp. 1-16 : 6

Identification key to the species of Gergithus (Maculergithus) :

1. Vertex brown; yellow round spot on frons near dorsal margin ( Fig. 2C ); tegmina with 10 yellow spots in total ( Fig. 2D ). Recorded from Jianfeng Mountain, Hainan, China ………………………… ………………………………… Gergithus (Maculergithus) multipunctatus Che, Zhang & Wang, 2007

– Vertex yellow; yellow spot of frons extending to vertex, or no yellow spot on dorsal half of frons; tegmina with 8, 9 or 10 yellow spots in total ……………………………………………………2

2. Yellow spot of frons extending to vertex ( Fig. 2A, G ) ………………………………………………3 – Dorsal half of frons brown without yellow spot ( Fig. 2E, I ) ……………………………………4

3. Tegmina with 2 yellow spots along sutural margin and 8 yellow spots in total ( Fig. 2B ). Recorded from Tam Dao N.P., Vietnam …………………… G. (Maculergithus) luteomaculatus subgen. et sp. nov.

– Tegmina with 3 yellow spots along sutural margin and 10 yellow spots in total ( Fig. 2H ). Recorded from Tam Dao N.P., Vietnam …………………… …… G.(Maculergithus) tamdao subgen. et sp. nov.

4. Tegmina with 9 yellow spots in total ( Fig. 2F ). Recorded from Bawangling Mountain, Hainan, China …………………………………… G. (Maculergithus) nonomaculatus Meng & Wang, 2012

– Tegmina with 10 yellow spots in total ( Fig. 2J ). Recorded from Wuzhishan, Hainan, China ………… ……………………………………………………………………………… G. ( Maculergithus ) sp.

Figures

Fig. 2. Gergithus (Maculergithus) subgen. nov., schema of maculation of frons and left tegmen. A–B. Gergithus (Maculergithus) luteomaculatus subgen. et sp. nov. C–D. Gergithus (Maculergithus) multipunctatus Che, Zhang & Wang, 2007. E–F. Gergithus (Maculergithus) nonomaculatus Meng & Wang, 2012. G–H. Gergithus (Maculergithus) tamdao subgen. et sp. nov. I–J. Gergithus (Maculergithus) sp. (drawings by J. Caudron, RBINS; C–F, I–J based on illustrations of original descriptions).