Ophthalmothrips Hood, 1919

Li, Yanqiao, Zhao, Linpeng, Li, Chengwen & Dang, Lihong, 2022, Review of the genus Ophthalmothrips Hood (Thysanoptera: Phlaeothripidae) from China, with a new species, Zoological Systematics 47 (4), pp. 305-312 : 306

Ophthalmothrips Hood

Ophthalmothrips Hood, 1919: 67 . Type species: Ophthalmothrips pomeroyi Hood.

Pyrgothrips Kary, 1924: 35 . Type species: Pyrgothrips conocephalus Karny , synonymised by Mound & Palmer, 1983: 70.

Fulgorothrips Faure, 1933: 62 . Type species: Fulgorothrips priesneri Faure , synonymised by Mound & Palmer, 1983: 70.

Derothrips Jacot-Guillarmod, 1940: 133 . Type species: Derothrips amyae Jacot-Guillarmod , synonymised by Mound & Palmer, 1983: 70.

Diagnosis. Medium sized. Head longer than broad usually with preocular projection; compound eyes distinctly prolonged posteriorly on ventral surface; interocellar and postocular setae usually developed; cheeks subparallel with short setae like spines. Antenna eight-segmented, slender, segment III with 2 sense cones, IV with 4. Mouth-cone short. Pronotal anterior margin setae usually reduced, epimeral setae well-developed, notopleural suture complete; basantra present and ferna usually developed. Macropterous or micropterous; for the macropterous specimens, forewing with numerous duplicated cilia. Fore tarsal tooth present or absent in both sexes. Metathoracic sternopleural sutures absent. Pelta developed, usually triangular; abdominal tergites II–VII with two pairs of wing-retaining setae; tergite IX with S1 and S2 setae usually as long as tube; tube smooth, shorter than head.

Key to Ophthalmothrips species from China.

1. Wing-retaining setae small and straight in macropterous species ................................................. O. yunnanensis Cao, Guo & Feng *

Wing-retaining setae developed and sigmoid in macropterous species ( Fig. 11 ) ...............................................................................2 2. Fore tarsal tooth present in both sexes (Fig. 20)............................................................................................. O. miscanthicola (Haga)

Fore tarsal tooth absent in both sexes (Figs 21–22) ........................................................................................................................... 3 3. Postocular setae distinctly longer than interocellar setae (Fig. 16).................................................................. O. formosanus (Karny)

Postocular setae shorter than interocellar setae .................................................................................................................................. 4 4. Preocular projection wider than length; postocular setae usually developed ......................................................... O. longiceps (Haga)

Preocular projection elongated, distinctly longer than 1.0 time as long as wide ( Figs 1 , 8–9 ); postocular setae reduced, not reaching posterior margin of eyes ( Fig. 1 ) ...................................................................................................... O. elongatus Li & Dang , sp. nov. * From original description ( Cao et al., 2010)

Figures

Figures 8–15. Ophthalmothrips elongatus Li & Dang, sp. nov. 8. Head and prosternum, female; 9. Head and prosternum, male; 10. Antenna; 11. Pelta and tergites II; 12. Pronotum and mesopresternum; 13. Tergites IX–X, female; 14. Tergites IX–X, male; 15. Habitat, from Poaceae grasses of Dupangling National Nature Reserve, Hunan. Scale bars: 8–14=100μm.

Figures 1–7. Dorsal view of Ophthalmothrips elongates Li & Dang, sp. nov. 1. Head, pronotum and forelegs of female; 2. Antenna; 3. Sub-basal setae; 4. Mesopresternum; 5. Pelta; 6. Tergites IX–X of male; 7. Tergites IX–X of female.