Heliothrips Haliday 1836

Key to Heliothrips species

(adapted from Nakahara et al., 2015 and Xie et al., 2019)

1. Metascutal triangle with posteromarginal flange absent or not reaching anterior margin of metascutellum; campaniform sensilla on tergite I on reticulate area (Fig. 76)................................................................. similis

-. Metascutal triangle with posteromarginal flange extending over anterior margin of metascutellum; campaniform sensilla on tergite I anterior to reticulate area (Figs 74, 75).............................................................. 2

2. Femora dark brown, in contrast to yellow tibiae (Fig. 24); ventral sense cone on antennal segment IV about 0.75 times as long as segment (Fig. 44)............................................................................... zucchi

-. Femora yellow (Figs 19–23); ventral sense cone on antennal segment IV about 0.45 times as long as segment............ 3

3. External sense cone on antennal segment IV not reaching medial area of segment VI; antennal segments IV and V constricted basally (Fig. 41); mesonotum with polygonal reticles (Fig. 74); abdominal tergites VII–X golden yellow with apex of X brown (Fig. 107); males with oval pore plates on sternites III–VII (Fig. 115)................................ haemorrhoidalis

-. External sense cone on antennal segment IV reaching medial area of segment VI; antennal segments IV and V not constricted basally (Fig. 42); mesonotum with transverse reticles (Fig. 75); abdominal tergites VII–X brown (Fig. 108); males with transverse pore plates on sternites III–VII (Fig. 116)................................................... longisensibilis