Hemisphaeriini, Melichar, 1906

Gnezdilov, Vladimir M., 2015, Description of a new genus and species of Hemisphaeriini from Brunei with an identification key to the Bornean species of the tribe (Hemiptera: Fulgoroidea: Issidae), Acta Entomologica Musei Nationalis Pragae 55 (1), pp. 9-18 : 16

Key to species of Hemisphaeriini known from Borneo

1 Metope narrow, dark brown red with pale lateral margins ( Fig. 19 ). ................................ .............................................................................. Gergithus niger niger ( Walker, 1857)

– Metope wide ( Fig. 13 ), with different coloration. .......................................................... 2

2 Fore wings elongate, each with three separate light spots ( Figs 11, 12 ). .......................... .......................................................................... Bruneastrum cardinale gen. & sp. nov.

– Fore wings relatively wider ( Figs 16, 18 ); if spots are present, then two of them are partly fused posteriorly ( Fig. 18 ). ............................................................................................. 3

3 Fore wings unicoloured, without spots or bands. ........................................................... 4

– Fore wings with spots or bands. ..................................................................................... 6

4 General coloration dark brown to black. ......... Hemisphaerius bacculinus Butler, 1875

– General coloration pale. ................................................................................................. 5

5 Fulvous, mesonotum with two wide red stripes ( Figs 15, 16 ). ......................................... ......................................................................... Hemisphaerius rufovarius Walker, 1858

– Brown yellowish, mesonotum without stripes. .... Hemisphaerius torpidus Walker, 1857

6 Fore wings testaceous with two wide, irregular, parallel, transverse dark brown to black lines (see BUTLER 1875: pl. 4, fig. 14). ................. Hemisphaerius typicus Walker, 1857

– Fore wings dark brown, each with three large light spots, two of which are partly fused posteriorly ( Figs 17, 18 ). ............................. Hemisphaerius maculatus Melichar, 1906

Figures

Figs 15–19. 15–16 – Hemisphaerius rufovarius Walker, 1858, holotype (BMNH), body length 3.5 mm; 17–18 – H. maculatus Melichar, 1906, syntype (NHRS), body length 4.5 mm (15, 17 – dorsal view; 16, 18 – lateral view). 19 – Gergithus niger (Walker, 1857), syntype (BMNH), frontal view.

Figs 11–14. Bruneastrum cardinale gen. & sp. nov., holotype (BMNH), body length 4.1 mm. 11 – dorsal view; 12 – lateral view; 13 – frontal view; 14 – head in dorsal view.