Gergithus niger niger ( Walker, 1857 )

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 : 15

Gergithus niger niger ( Walker, 1857)

( Fig. 19 )

Hemisphaerius niger Walker, 1857: 155 .

Gergithus niger: DISTANT (1909: 86) .

Hemisphaerius chilocoroides Walker, 1862: 308 ; synonymized by LIANG (2001: 236).

Hemisphaerius walkeri Butler, 1875: 100 ; replacement name for Hemisphaerius chilocoroides [sic] Walker, 1862 nec Hemisphaerius chilocoroides Walker, 1851 ; synonymized by LIANG (2001: 236).

Note. Described from Sarawak ( WALKER 1857), later recorded from Malacca and Java ( WALKER 1858). However, WALKER (1858) mentioned that the specimens from Malacca and Java are larger than those from Borneo and differ somewhat in the head coloration. MELICHAR (1906) recorded this species also from Perak. The synonymies with H. chilocoroides and H. walkeri were established by LIANG (2001) on the basis of examination of corresponding type specimens.

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.