Scirtothrips
Creators: name: Mound, L. A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Thripidae
Scirtothrips

description: Key to genera of Scirtothrips genus-group
1. Antennae 6-segmented...................................................................... Drepanothrips
-. Antennae 7 or 8-segmented.............................................................................. 2
2. Antennae 7-segmented................................................................................. 3
-. Antennae 8-segmented................................................................................. 5
3. Antennae widely separated, interantennal projection wider than length of antennal segment I; first ocellar setae long, about 3 times as long as distance between posterior ocelli; pronotum with a pair of long anteromarginal setae........ Kenyattathrips
-. Antennae not widely separated, interantennal projection not wider than length of antennal segment I; first ocellar setae not elongate; pronotum with no long anteromarginal setae........................................................ 4
4. Mesonotal median and submedian setae arising almost in a transverse line; abdominal tergites with many rows of closely spaced microtrichia on lateral thirds; tergal median setae S1 longer than distance between their bases....... Anascirtothrip s
-. Mesonotal submedian setae arising near posterior margin, posterolateral to median setae; abdominal tergites lateral thirds with few microtrichia on sculpture lines; tergal median setae S1 shorter than the distance between their bases..... Parascirtothrips
5. Abdominal tergites IV–VII without rows of microtrichia on lines of sculpture laterally (Fig. 4); fore wing second vein with complete row of about 16 setae................................................................ Scirtidothrips
-. Tergal lateral thirds with closely spaced rows of microtrichia on sculpture lines; fore wing second vein with less than 12 setae................................................................................................... 6
6. Tergal setae S1 and S2 arise laterally closer together than their length; head with ocellar setae pair I absent, no setal pair in front of first ocellus............................................................................ Biltothrips
-. Tergal setae S1 usually close together medially, distant from setae S2; ocellar setae pair I present, sometimes wide apart (absent in some specimens of Scirtothrips malayensis)....................................................... 7
7. Abdominal sternites IV–VI with median two pairs of posteromarginal setae arising in front of posterior margin (Fig. 2)................................................................................................ Cercyothrips
-. Abdominal sternites IV–VI with posteromarginal setae arising at margin......................................... 8
8. Tergite IX with pair of campaniform sensilla present medially........................................... Ajothrips
-. Tergite IX without any campaniform sensilla............................................................... 9
9. Fore wing second vein without setae; pronotum trapezoidal, as long as wide (Fig. 10); sternites with complete posteromarginal comb of microtrichia; [where known, male apterous]................................................ Siamothrips
-. Fore wing second vein with some setae; pronotum transverse, wider than long; sternites rarely with complete posteromarginal comb of microtrichia; [where known, male macropterous]................................................... 10
10. Major setae on pronotum and fore wing tapering and sharply pointed.................................... Scirtothrips
-. Major setae on pronotum and fore wing thickened, parallel-sided and bluntly pointed (Fig. 5).............. Ephedrothrips
description: Published as part of Mound, L. A., 2015, Genera of the Scirtothrips genus-group (Thysanoptera, Thripidae) with a new species of Siamothrips from Malaysia, pp. 387-394 in Zootaxa 4021 (2) on page 388, DOI: 10.11646/zootaxa.4021.2.9, http://zenodo.org/record/239146