Simulium (Gomphostilbia) inthanonense Takaoka & Suzuki, 1984

Takaoka, Hiroyuki, Sofian-Azirun, Mohd, Ya’Cob, Zubaidah, Chen, Chee Dhang, Lau, Koon Weng, Low, Van Lun, Pham, Xuan Da & Adler, Peter H., 2017, The black flies (Diptera: Simuliidae) of Vietnam, Zootaxa 4261 (1), pp. 1-165 : 53

Simulium (Gomphostilbia) inthanonense Takaoka & Suzuki, 1984

Simulium (Gomphostilbia) inthanonense Takaoka & Suzuki, 1984: 18 –21 (Female, male, pupa and larva).

Distribution. South China, Thailand and Vietnam (Bac Thai and Ha Thai).

Remarks. This species was originally described from Thailand by Takaoka and Suzuki (1984), and later recorded from Vietnam by Pham (1998, 1999). There remains a possibility that the species recorded as S. (G.) inthanonense is either S. (G.) phulocense or S. (G.) unii sp. nov. or another related species, as its identification was based on only two pupae and three larvae. These three species and a few other related species have the same shape of the cocoon with a short anterodorsal projection, as shown in Fig. 19 E.

Figures

FIGURE 19. Pupa of Simulium (Gomphostilbia) unii sp. nov. A, Anterior part of thorax and gill filaments (left side; outer view); B & C, Basal portions of gill filaments with different arrangements of dorsal and medial triplets (left side; outer view); D, Terminal hooks (caudal view); E & F, Cocoons (E, dorsal view; F, lateral view). Scale bars. 1.0 mm for E and F; 0.1 mm for A – C; 0.02 mm for D.