Bactrothrips

Key to Chinese Bactrothrips View in CoL species

1. Eyes posteriorly prolonged on ventral surface ( Fig. 32 View FIGURES 31 – 37 )............................................. B. flectoventris View in CoL

- Eyes not prolonged on ventral surface ( Figs 31, 33–37 View FIGURES 31 – 37 )........................................................ 2

2. Sense-cones on antennal segment III well developed, longer than one third of this segment ( Fig. 1 View FIGURES 1 – 8 )..................... 3

- Sense-cones on antennal segment III shorter than one third of this segment ( Fig. 15 View FIGURES 15 – 24 )................................ 4

3. Tibiae largely dark brown, but yellowish at extreme bases and apices; lateral tubercles on male abdominal segment VI bicoloured, with basal 1/4 dark brown....................................................... B. elongatus View in CoL n. sp.

- Hind legs bicoloured, at least distal third of hind tibiae yellowish; lateral tubercles on abdominal segment VI largely dark brown, with extreme apices yellow................................................................. B. honoris View in CoL

4. Tibiae largely dark brown, with extreme bases and apices yellowish.............................. B. furvescrus View in CoL n. sp.

- Tibiae distinctly bicoloured, about yellow at apical half and dark brown at basal half................................ 5

5. Interocellar setae on head the longest ( Fig. 34 View FIGURES 31 – 37 )...................................................... B. pictipes View in CoL

- Mid-dorsal setae on head the longest ( Figs 31, 35 View FIGURES 31 – 37 )............................................................ 6

6. Postocellar setae much longer than postoculars, about 3–5 times as long as diameter of posterior ocelli........ B. brevitubus View in CoL

- Postocellar setae much shorter than postoculars, about 1–1.5 times as long as diameter of posterior ocelli.................................................................................................... B. quadrituberculatus View in CoL