Bactrothrips

Dang, Lihong & Qiao, Gexia, 2012, The genus Bactrothrips in China (Thysanoptera: Idolothripinae): morphological and molecular data, and a key with two new species, Zootaxa 3449, pp. 47-61 : 50

Key to Chinese Bactrothrips species

1. Eyes posteriorly prolonged on ventral surface ( Fig. 32 )............................................. B. flectoventris

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

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

- Sense-cones on antennal segment III shorter than one third of this segment ( Fig. 15 )................................ 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 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

4. Tibiae largely dark brown, with extreme bases and apices yellowish.............................. B. furvescrus 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 )...................................................... B. pictipes

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

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

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

Figures

FIGURES 31 – 37. Bactrothrips spp. Dorsal view of head: 31, B. brevitubus; 32, B. flectoventris; 33, B. honoris; 34, B. pictipes; 35, B. quadrituberculatus; 36, B. elongatus n. sp.; 37, B. furvescrus n. sp. Scale bars = 100 μm.

FIGURES 1 – 8. Bactrothrips elongatus n. sp. Female: 1, antenna; 2, dorsal view of head; 3, dorsal view of pronotum; 4, dorsal view of mesonotum and metanotum; 5, fore wing; 6, pelta; 7, abdominal tergite IX and tube. Male: 8, abdominal tergites VI – VIII showing the lateral tubercles. Scale bars = 100 μm.

FIGURES 15 – 24. Bactrothrips furvescrus n. sp. Male: 15, antenna; 16, dorsal view of head and pronotum; 17, mesopraesterum; 18, dorsal view of mesonotum and metanotum; 19, base of forewing; 20, hind leg; 21, pelta; 22, abdominal tergites VI – VIII showing the lateral tubercles; 23, abdominal tergite IX and tube. Female: 24, abdominal tergite IX and tube. Scale bars = 100 μm.