Key to Liothrips species from Taiwan

1. Metanotum with reticulate sculpture (Figs 22, 31)........................................................... 2

-. Metanotum with longitudinal sculpture lines (Fig. 18)........................................................ 3

2. All tarsi yellow......................................................................... dayulingensis sp.n.

-. Fore tarsi yellow, mid and hind tarsi brown.......................................................... floridensis

3. Maxillary stylets low in head, posterior to po setae........................................................... 4

-. Maxillary stylets retracted to level of po setae.............................................................. 8

4. Po setae short, much less than length of eye; pelta without CPS........................................... vitivorus

-. Po setae about same length as eye, pelta with paired CPS...................................................... 5

5. All tibiae light yellow............................................................................ pallipes

-. Colour of tibiae different, either all brown or brown and yellow................................................. 6

6. Tergite II laterally with 8–10 accessary setae......................................................... takahashii

-. Tergite II laterally with less than 5 accessary setae........................................................... 7

7. Head about 1.8 times as long as wide; fore wings hyaline...................................... threobrevis nom.nov.

-. Head about 1.2 times as long as wide; fore wings grey................................................. brevitubus

8. Pronotal am setae small, much shorter than aa setae.................................................. kuwayamai

-. Pronotal am setae as long as or longer than aa setae.......................................................... 9

9. Pelta without pair of CPS but with 3–4 small setae posterolaterally.................................. heptapleuricola

-. Pelta with 1 pair of CPS, without setae................................................................... 10

10. Pronotal aa setae short, am setae longer than aa setae.............................................. heptapleurinus

-. Pronotal aa setae long, longer or equal to am setae.......................................................... 11

11. Fore wings hyaline; meso and metanotal reticles dense with inner wrinkles................................ hsuae sp.n.

-. Fore wings greyish; meso and metanotal reticles without inner wrinkles.................................... piperinus