Scirtothrips, Shull, 1909

Pal, Shash, Patidar, Abhishek, Panjaliya, Rakesh Kumar, Kumar, Vikas & Tyagi, Kaomud, 2023, Species of the genus Scirtothrips from India (Thysanoptera, Thripidae), Zootaxa 5306 (3), pp. 392-396 : 392-393

Key to ten species of Scirtothrips from India

(asterisk indicates species included from literature)

1. Ocellar I setae absent [tergites III–V with S1 setae wider apart than their length, male tergite IX with drepanae]... malayensis

-. Ocellar I setae present................................................................................. 2

2. Microtrichia on abdominal sternites IV–VI extend completely across median area at least on posterior half.............. 3

-. Microtrichia on abdominal sternites IV–VI restricted to lateral areas; male tergite IX with drepanae................... 7

3. Antecostal ridge on tergites dark but interrupted medially [antennae and fore wings dark, male tergite IX without drepanae]................................................................................................. hitam

-. Antecostal ridge on tergites not interrupted medially......................................................... 4

4. Abdominal tergites with pale antecostal ridge and median area [lateral microtrichial field of tergites with 4–5 discal setae, male tergite IX without drepanae].................................................................... oligochaetus

-. Abdominal tergites with dark antecostal ridge............................................................... 5

5. Abdominal tergites without dark median area, lateral microtrichial field of tergites with 4–5 discal setae; male tergite IX with drepanae....................................................................................... fulleri *

-. Abdominal tergites with dark median area, lateral microtrichial field of tergites with 3 discal setae; male tergite IX without drepanae............................................................................................ 6

6. Sternites with dark transverse antecostal ridge......................................................... dorsalis

-. Sternites without dark transverse antecostal ridge................................................... pteridicola *

7. Fore wing posteromarginal cilia either completely wavy or wavy at tips.......................................... 8

-. Fore wing posteromarginal cilia straight................................................................... 9

8. Ocellar setae III placed between fore and hind ocelli, close to fore ocelli; antecostal ridge on tergites dark; lateral microtrichial field of abdominal tergites with 3 setae; microtrichia absent on tergite IX; fore wing dark with pale apex, posteromarginal cilia wavy at tips................................................................................ quercus sp.n.

-. Ocellar setae III placed anterior to tangent between anterior margins of hind ocelli; antecostal ridge on tergites pale; lateral microtrichial field of abdominal tergites with 4 setae; microtrichia present on tergite IX; fore wing pale, posteromarginal cilia completely wavy.............................................................................. mangiferae

9. Ocellar setae III placed between the hind ocelli toward the posterior margin of hind ocelli; pronotal pmII four times longer than pmI; metanotum with reticulate sculpture, reticles with internal markings in middle, median setae far behind anterior margin; fore wing second vein with one seta; tergite IX with microtrichia medially................................ bispinosus

-. Ocellar III placed anterior to hind ocelli, just at the line of anterior margin of hind ocelli; pronotal pmII......... three times longer than pmI; metanotum with reticulate sculpture, reticles without internal markings; median setae at anterior margin; fore wing second vein with 3 setae; tergite IX without microtrichia medially................................... kenyensis