Haplothrips, Amyot & Serville, 1843

Rasool, Iftekhar, Alattal, Yehya Zaki, Ansi, Amin Al & Aldhafer, Hathal M., 2025, The Suborder Tubulifera (Thysanoptera) of Saudi Arabia with one new species, new records and checklist to the Arabian Peninsula species, Zootaxa 5627 (3), pp. 431-454 : 440

Key to the species of Haplothrips from Saudi Arabia

(Species with * not examined)

1. Fore wings with duplicated cilia.......................................................................... 2

-. Fore wings without duplicated cilia....................................................................... 9

2. Antennal segment III with two sense cones ( Fig. 7 ); maxillary stylets low in head and wide apart............ ganglbaueri

-. Antennal segment III with one sense cone ( Fig. 8–9 ); maxillary stylets retracted almost to post ocular setae............. 3

3. Hind and mid tibiae completely dark brown ( Fig. 55 )........................................................ 4

-. Hind and mid tibiae sharply yellow at extreme apex ( Figs 60–63 )............................................... 5

4. Terminal antennal segments V–VIII slender ( Fig. 8 ).................................................. cahirensis

-. Terminal antennal segments V–VIII broad, not slender ( Fig. 9 )............................................. sorghi

5. Fore tarsi with tooth developed in both sexes; fore femur enlarged.............................................. 6

-. Fore tarsi without tarsal tooth, or very minute tooth rarely present only in males; fore femur normal, not enlarged........ 7

6. Head narrowed towards base; anteroangular pronotal setae pointed, posteroangular pronotal setae blunt; tarsal tooth minute, not arising from broad base; fore femur slightly enlarged.................................................. pharao *

-. Head normal, not narrowed towards base; all major pronotal setae blunt ( Fig. 33 ); tarsal tooth well developed, arising from broad base; fore femur greatly enlarged ( Figs 60–61 )................................................ leptadeniae

7. Antennal segment II yellow at distal half (rarely dark); less than distal half of mid and hind tibiae sharply yellow salvadorae *

-. Antennal segment II dark brown, rarely yellow at extreme apex; mid and hind tibiae sharply yellow at extreme apex...... 8

8. Head 0.9 times as long as wide; antennal segment II 1.5 times as long as wide, segments IV–VI brown, except extreme base yellow, VII–VIII dark brown; male without tarsal tooth ( Fig. 63 )...................................... maroccanus

-. Head 1.2 times as long as wide; antennal segment II 2.4 times as long as wide, segments IV–VI pale yellow (rarely shaded distal half), VII–VIII gray; male with minute tarsal tooth.................................................. ochradeni *

9. Pronotum with only epimeral setae developed ( Fig. 34 ); fore wing with distal cilia plumose or rough.............. tardus

-. Pronotum at least with three pairs of major setae well developed ( Fig. 30–32 ); fore wings distal cilia smooth........... 10

10. Pronotum without mid-lateral setae ( Fig. 32 ); fore wing sub basal setae arranged in triangle; maxillary stylets retracted to postero ocular setae............................................................................. clarisetis

-. Pronotum with mid-lateral setae developed ( Fig. 30–31 ); fore wing sub-basal setae not arranged in triangle; maxillary stylets retracted to compound eyes............................................................................ 11

11. Antennal segment III with one sense cone ( Fig. 40 ); all tarsi yellow ( Figs 45–46 )................................. 12

-. Antennal segment III with two sense cones ( Fig. 10–11 ); at least mid and hind tarsi brown ( Figs 52–54 )............... 13

12. Head longer than wide, 1.39 times as long as wide, (length 275, width 197); antennal segment III distinctly shorter that IV, V and VI; pronotum 0.6 times longer than wide; mid and hind-tarsi dark brown................................. talpa *

-. Head wider than long, 0.75 times as long as wide (length 165, width 220) ( Fig. 38 ); antennal segment III as long as IV, V and VI; pronotum distinctly transverse, 0.3 times longer than wide ( Fig. 38 ); at least mid-tarsi yellow ( Figs 45, 46 )................................................................. microcephalum sp. nov

13. Antennal segments IV–VI yellow; pronotum with all five major setae developed ( Fig. 30 ).................. articulosus

-. Antennal segments IV–VI brown; pronotum with antero-marginal setae reduced ( Fig. 31 )..................... bagnalli

Figures

FIGURES 2–11. Antennae of Tubulifera species: (2) Gigantothrips nigripes; (3) Dolicholepta micrura; (4) Dolichothrips varipes; (5) Apterygothrips haloxyli; (6) Idiothrips bellus; (7) Haplothrips ganglbaueri; (8) H. cahirensis; (9) H. sorghi; (10) H. articulosus; (11) H. bagnalli.

FIGURES 51–59: Adults of Phlaeothripidae. (51) Chiraplothrips graminellus; (52) H. articulosus; (53–54) H. bagnalli (53) Female; (54) Male; (55) H. cahirensis male; (56–57) H. clarisetis (56) Female; (57) Male; (58–59) H. ganglbaueri; (58) Female; (59) Male.

FIGURES 60–67: Adults of Phlaeothripidae. (60–61) H. leptadeniae (60) Female (61) Male; (62–63) H. maroccanus (62) Female; (63) Male; (64–65) H. tardus (64) Female; (65) Male; (66–67) Plicothrips apicalis (66) Female; (67) Male.

FIGURES 28–34. (28–29) Tergites. (28) Chiraplothrips graminellus; (29) Plicothrips apicalis; (30–34) Pronotum. (30) Haplothrips articulosus; (31) H. bagnalli; (32) H. clarisetis; (33) H. leptadeniae; (34) H. tardus.

FIGURES 38–44. Haplothrips microcephalum Rasool sp. nov. (38) Head and pronotum; (39) Meso- and Metanotum; (40) Antennae; (41) Tergites I–III; (42) Female tergites IX–X; (43) Male tergites IX–X; (44) sub-basal wing setae.

FIGURES 45–46. Haplothrips microcephalum Rasool sp. nov. (45) Female; (46) Male.