Caliothrips quadrifasciatus (Girault)

(Figs 2, 5, 8, 10, 33–34)

Sericothrips quadrifasciatus Girault, 1927: 1 .

Hercothrips graminicola Bagnall & Cameron, 1932: 417 .

Described from Australia, this species is recognized as the senior synonym of C. graminicola, a species known from Africa and India (Mound & Houston 1987). The record of indicus from China was repeated by Mirab-balou et al. (2017) and the specimens studied by Han (1997) have not been re-examined. Han states that the males he studied had sternal pore plates about 40–50 microns wide, whereas indicus has these structures 80–90 microns wide (Wilson 1975). This suggests that the identification of indicus by Han was a misidentification of quadrifasciatus, in which the pore plates of males are also very wide but never much wider than 60 microns (Fig. 10). In addition, the tergal sculpture of quadrifasciatus is distinctive in forming sub-parallel oblique reticles (Fig. 5). This is another member of the genus that is typically found on various grasses.

Specimens studied. CHINA, Guangxi, Hezhou (24°57′N, 111°55′E), 3 females and 3 males from wormwood, 16.ix.2015 (Chao Zhao) . Guangdong, Gaozhou, Yuntan (23°53′N, 111°10′E), 11 females and 3 males from grass, 8.ix.2014 (Zhaohong Wang) .