Key to species of Neohydatothrips

[ gracilipes not examined, ilamensis excluded, see above]

1. Body dark brown (Figs 20, 21); posterior margins of abdominal tergites with craspedum; fore wing second vein with 1 distal seta........................................................................................ gracilicornis

-. Body bicoloured or yellow with light brown markings (Figs 1, 2, 9, 14, 27, 28); posterior margins of abdominal tergites without craspedum (Fig. 10); fore wing second vein without distal seta (Figs 8, 13, 19, 33)............................... 2

2. Body sharply bicoloured (Figs 1, 2, 9, 14).................................................................. 3

-. Body yellow with light brown markings (Figs 27, 28)......................................................... 4

3. Abdominal segments I–III uniformly yellow (Fig. 14); posterior margin of abdominal tergites VII–VIII without a microtrichial comb (Fig. 17)............................................................................ amygdali sp. n.

-. Abdominal segments I–III brownish yellow (Figs 1, 2); posterior margin of abdominal tergites VII–VIII with complete comb of microtrichia (Figs 5, 11)....................................................................... abnormis

4. Pronotal blotch weakly sclerotised; fore wing pale with shaded area in basal third; posterior margin of abdominal tergites VII– VIII with complete comb of microtrichia (cf. Fig. 5)................................................... gracilipes

-. Pronotal blotch very distinct (Fig. 29); fore wing with two dark bands (Fig. 33); only posterior margin of abdominal tergite VIII with complete comb of microtrichia (Fig. 30).................................................... tadzhicus