Key to Haplothrips species from Malesia

1. Fore wing without duplicated cilia distally on posterior margin................................................. 2

-. Fore wing with duplicated cilia distally on posterior margin.................................................... 3

2. Pronotum with only epimeral setae larger than discal setae (Fig. 6).......................................... timori

-. Pronotum with 5 pairs of major setae................................................................ robustus

3. Antennal segment III with 2 sense cones................................................................... 4

-. Antennal segment III with 1 sense cone.................................................................... 8

4. Antennal segment IV with 3 sense cones................................................................... 5

-. Antennal segment IV with 4 sense cones................................................................... 6

5. Fore tarsus with curved tooth at inner apex (Fig. 3); antennal segments IV–VI yellow at base (Fig. 3); all femora yellow.............................................................................................. aliceae sp.n.

-. Fore tarsus with tooth minute or absent; antennal segments IV–VI uniformly brown; femora variously shaded brown (Fig. 18)............................................................................................ incognitus

6. Mid and hind tibiae and tarsi clear yellow....................................................... bituberculatus

-. Mid and hind tibiae light to dark brown.................................................................... 7

7. Tergite IX S1 setae longer than tube; sense cones on antennal segment III equally large and stout (Fig. 17); fore wing sub-basal setae S3 weakly capitate.......................................................................... gowdeyi

-. Tergite IX S1 setae no more than 0.75 as long as tube; inner sense cone on antennal segment III smaller and thinner than outer; fore wing sub-basal setae S3 acute............................................................... tenuipennis

8. Maxillary stylets close together, less than 0.25 of head width apart (Fig. 11)....................................... 9

-. Maxillary stylets more than 0.3 of head width apart (Figs 9–10)............................................... 10

9. Antennal segments III–VI clear yellow; mid and hind tarsi as dark brown as tibiae; fore tarsus with tooth in both sexes; antennal segment III about 65 microns long, 2.5 times as long as wide.............................................. jordani

-. Antennal segments IV–VI light brown, III paler; mid and hind tarsi paler than tibiae; fore tarsal tooth absent or minute in both sexes; antennal segment III less than 50 microns long, 1.6 times as long as wide............................ imperatae

10. Fore wing sub-basal setae S3 very long and finely pointed, at least as long as basal width of wing; fore tarsus of female with hook-like tooth at inner apex (Fig. 13); mid and hind tarsi as dark as tibiae....................................... 11

-. Fore wing sub-basal setae S3 not so long; fore tarsal tooth of female not hook-like; mid and hind tarsi usually paler than tibiae, sometimes yellow.................................................................................... 12

11. Fore wing uniformly grey; epimeral setae 95 microns, postocular setae 60 microns......................... fumipennis

-. Fore wing uniformly pale; epimeral and postocular setae no more than 40 microns long (Fig. 9)................... certus

12. Major pronotal setae including epimerals dark (Fig. 8); fore wing shaded base short, scarcely reaching sub-basal setae S1, setae S3 pointed; stylets retracted to po setae................................................................ anceps

-. Major pronotal setae including epimerals pale (Fig. 7); fore wing shaded base extending at least to sub-basal setae S2, setae S3 capitate; stylets wider apart and lower........................................................... ganglebaueri