Hydatothrips

Wang, Chin-Ling, 2007, Hydatothrips and Neohydatothrips (Thysanoptera, Thripidae) of East and South Asia with three new species from Taiwan, Zootaxa 1575 (1), pp. 47-68 : 50-51

Key to species of Hydatothrips from East and South Asia

1. Antenna 7 segmented; occipital apodeme not touching posterior margin of eye........................................ 2

-. Antenna 8 segmented; occipital apodeme touching or not touching posterior margin of eye..................... 6

2. Abdominal tergites II–VIII with posteromarginal craspedum; tergite V posteromarginal comb short medially ........................................................................................................................................................ besar

-. Abdominal tergites without posterior craspedum; tergite V posteromarginal comb absent medially......... 3

3. Anterior and posterior margins of pronotal blotch strongly concave ( Fig. 5D ) .......................................... 4

-. Posterior margin of pronotal blotch concave, anterior margin even or slightly curved ( Fig. 4B )............... 5

4. Abdominal tergites V–VI paler than other tergites; tergites IV–VI with 7–13 lateral discal setae ........ noro

-. Abdominal tergite VI paler than other tergites; tergites IV–VI with 5–7 lateral discal setae meriposa sp. n.

5. Antennal segment VI with a large, leaf-shaped sense cone, about same length as segment VII ................. ................................................................................................................................................... latisensibilis

-. Sense cone on antennal segment VI less than 0.5 length of segment VII ........................................... karnyi

6. Forewing second vein with setae; setae may be lacking on one side, but at least one second vein with setae; abdominal tergites II–VI with or without posteromarginal comb medially ...................................... 7

-. Forewing second vein without setae; abdominal tergites II–VI without posteromarginal comb medially 13

7. Forewing second vein with 4–5 setae................................................................................................... dorax

-. Forewing second vein with 1–2 setae.......................................................................................................... 8

8. Color of abdominal tergite IV paler than tergites III and V ....................................................................... 9

-. Abdominal tergites other color patterns..................................................................................................... 10

9. Body dark brown; posteromarginal comb of abdominal tergites II–VI complete, median posteromarginal comb of tergite V about half the length of comb laterally; posterior 2/3 of metanotum with dense longitudinal striae ............................................................................................................................... multipunctatus

-. Body yellow; posteromarginal comb of abdominal tergites II–VI complete but minute medially (fig. 3F); posterior 2/3 of metanotum with reticulate sculpture (fig.3E) ................................................ flavidus sp. n.

10. Abdominal tergite V paler than tergites I–IV and VI–X .......................................................... liquidambara

-. Abdominal tergite V not the palest ............................................................................................................ 11

11. Marginal setae on abdominal sternites II–VI inserted far ahead of posterior margin ..................... hartwigi

-. Marginal setae on abdominal sternites II–VI inserted marginally............................................................. 12

12. Forewing second vein with 1 seta, first vein with 18–19 setae ........................................ ananthakrishnani

-. Forewing second vein with 0(15%), 1(25%) or 2(60%) setae; first vein with 26–36 setae .................. onari

13. Abdominal tergites IV & V paler than III and VI...................................................................................... 14

-. Abdominal color pattern different: a. Abdominal tergites I–VI paler ......................................................................................................dentatus b. Abdominal tergites II–VI paler, brown in middle ................................................................... heteraureus c. Abdominal tergite V paler ....................................................................................................... abdominalis d. Abdominal tergites IV–VI paler .....................................................................................................atactus e. Abdominal tergite IV paler ...................................................................................................longicaudalis

14. One pair of pronotal posterior setae long, about same length as blotch .................................. palawanensis

-. Pronotal posterior setae shorter than length of blotch ............................................................................... 15

15. Pronotum in front of blotch between median pair of anteromarginal setae polygonally sculptured, not orientated in any direction ........................................................................................................................aureus

-. Pronotum in front of blotch transversely reticulate ................................................................................... 16

16. Forewing shaded in basal half, the rest much paler................................................................... boerhaaviae

-. Forewing shaded in distal three fourths, not paler distally........................................................................ 17

17. Abdominal tergite X without microtrichia; male with shorter glandular areas only on sternites VI & VII. .........................................................................................................................................................proximus

-. Abdominal tergite X with microtrichia; male sternites V–VII with transverse glandular areas .............. 18

18. Anterior angles of blotch extended forward to form protruding ends (fig. 2H); anterior portion of sternite VII forms 2 protuberances (fig. 10H) .................................................................................... ramaswamiahi

-. Anterior angles of blotch normal (fig. 2C); anterior portion of sternite VII without protuberances (fig. 2E) ............................................................................................................................................................... ekasi

Figures

FIGURE 4. Hydatothrips liquidambara: A. head; B. pronotum; C. meso- and metanotum; D. abdominal tergites III & IV; E. tergites VI–VIII.

FIGURE 5. Hydatothrips meriposa sp. n.: A. antenna, B. forewing; C. head; D. pronotum; E. meso– and metanotum, F. abdominal tergites III & IV; G. abdominal tergites VI–VIII.