Liothrips, Uzel, 1895

Wang, Chin-Ling & Lin, Feng-Chyi, 2020, Genera and species of the Liothrips lineage (Thysanoptera, Phlaeothripinae) from Taiwan, Zootaxa 4861 (3), pp. 349-375 : 350

Key to genera of Liothrips lineage from Taiwan

[* included from description]

1. Fore tarsal tooth present in females and males............................................................... 2

-. Female without fore tarsal tooth, male with or without this tooth................................................ 6

2. Abdominal tergites II–V each with more than 4 pairs of wing-retaining setae............................ Gigantothrips

-. Abdominal tergites II–V each with 2 pairs of wing-retaining setae............................................... 3

3. Dorsum of head with polygonal reticulations..................................................... Crotonothrips

-. Most of dorsum with transverse striae, polygonal reticles at most exist anteriorly between eyes........................ 4

4. Tube shorter than head; pronotum with transverse sculpture........................................ Liophloeothrips

-. Tube longer than head; pronotum with transverse sculpture forming several oval spots.............................. 5

5. Maxillary stylets retracted to postocular region, close together medially.............................. Agynaikothrips *

-. Maxillary stylets in lower 1/3 of head, separated from each other..................................... Gynaikothrips

6. Tube very long, longer than twice the length of head................................................. Leeuwenia

-. Tube never longer than twice length of head................................................................ 7

7. Pelta with 2 distinct lateral lobes; antennal segment VIII slender...................................... Litotetothrips

-. Pelta triangular, without lateral lobes; antennal segment VIII shorter than segment VII.............................. 8

8. Fore tarsus of male with small tooth............................................................ Eugynothrips

-. Fore tarsus of male with no tooth......................................................................... 9

9. Maxillary stylets retracted into middle of eyes................................................... Psephenothrips

-. Maxillary stylets not retracted as far as posterior margin of eyes............................................... 10

10. Po setae shorter than ocellus; MSS not developed.................................................. Phenicothrips

-. Po setae much longer than diameter of an ocellus, rarely shorter than or equal to an ocellus; MSS present......... Liothrips