Thrips, Linnaeus, 1758

Rasool, Iftekhar, Alattal, Yehya Zaki & Aldhafer, Hathal M., 2023, Faunistic inventory, identification keys and zoogeographical analysis of the Thysanoptera-Terebrantia of Saudi Arabia, including two new species, Zootaxa 5306 (2), pp. 151-200 : 189-190

Key to species of genus Thrips from Saudi Arabia

(Characters of T. simplex from Mound & Masumoto 2005)

1. Antennae 7-segmented..................................................................................2

- Antennae 8-segmented................................................................................. 4

2. Tergite IX with one pairs of CPS; pleurotergites with dense and regular rows of microtrichia; abdominal sternites without discal setae........................................................................................... tabaci

- Tergite IX with two pairs of CPS; pleurotergites without rows of microtrichia, or with irregular microtrichia; abdominal sternites with discal setae...................................................................................... 3

3. Ocellar setae pair III arising outside the ocellar triangle, pronotal posteroangular setae equally developed; sternite VII S1 setae arising in front of posterior margin; metanotum with irregular lines of sculptures; pleurotergites without rows of microtrichia.......................................................................................... angusticeps

- Ocellar setae III arising within ocellar triangle, pronotal outer posteroangular setae shorter than inner pair; sternite VII setae arising on margin; metanotum with equiangular reticulation; pleurotergites with irregular microtrichia............ speratus

4. Metanotal sculpture with markings within the reticles; fore wing first vein with 6–8 setae on distal half; ocellar setae short, scarcely longer than diameter of an ocellus............................................................ simplex

- Metanotal reticles without internal markings; fore wing first vein with 3–4 setae on distal half; ocellar setae longer than diameter of an ocellus.................................................................................. 5

5. Pleurotergites usually with 1–2 (rarely 3–4) discal setae; sternites III–VII with 6–12 distal setae arranged almost in single transverse line; metanotumm with paired CPS........................................................ lomatus

- Pleurotergites without discal setae; sternites III–VII with 15–24 distal setae arising irregularly; metanotum without CPS................................................................................................. gowdeyi