Scirtothrips, Shull, 1909

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 : 184

Key to species of Scirtothrips from Saudi Arabia

1. Abdominal sternites III–VI with rows of microtrichia across median area......................................... 2

- Abdominal sternites III–VI with rows of microtrichia restricted to lateral thirds.................................... 3

2. Fore wing posteromarginal cilia wavy; eyes with pigmented facets; tergites with anterior costal ridge brown medially; male tergite IX with paired drepanae and comb of stout setae on hind femora.................................... aurantii

- Fore wing posteromarginal cilia straight; eyes without pigmented facets; tergites with anterior costal ridge brown and small brown area medially; male tergite IX without paired drepanae and without a comb of stout setae on hind femora..... dorsalis

3. Abdomen uniformly yellow, with no trace of brown lines; fore wings with post marginal cilia wavy; metanotum reticulate; male tergite IX with S2 setae placed in front of posterior margin almost at level of S1 and S3 setae................. mangiferae

- Abdominal tergites and sternites with anterior costal ridges dark; fore wings with post marginal cilia straight; metanotum with closely spaced oblique striae; male tergite IX with posterior marginal setae different................................ 4

4. Abdominal tergites III–VII with 4–5 discal setae in microtrichial fields; ocellar setae pair III arising close to fore ocellus; hind femora of males without comb of setae; tergite IX in males with S1 and S3 setae arising far from posterior margin... nubicus

- Abdominal tergites III–VII with 5–7 discal setae in microtrichial fields; ocellar setae pair III arising at the middle of fore and hind ocelli; hind femora of male with comb of 12 stout setae arranged in two lines; tergite IX in males with all setae arising near posterior margin........................................................................... .. erectus sp. n