Thrips
Creators: name: Tyagi, Kaomud
name: Pal, Shash
name: Sarma, Madhurima
name: Kumar, Vikas
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Thripidae
Thrips

description: Key to species of the genus Thrips from India
* Indicates species included based only on published descriptions. $ Indicates species reported from Nepal
1. Mouthcone long, narrow and surpassing the base of prosternum, maxillary palp long and slender [Male: sternites III–VII each with a transverse pore plate, but not constricted middle].............................................. beharensis *
-. Mouthcone short, and not surpassing the base of prosternum, maxillary palp normal................................ 2
2. Abdominal sternites III–VI with discal setae (Fig. 158)....................................................... 3
-. Abdominal sternites III–VI without discal setae............................................................ 24
3. Abdominal sternites VII without discal setae............................................................... 4
-. Abdominal sternites VII with discal setae (Fig. 160)......................................................... 5
4. Metanotum with equiangular reticles with internal wrinkles (Fig. 106); forewing uniformly brown, first vein with setal row sometimes complete (Fig. 145); abdominal tergite VIII with posteromarginal comb absent medially (Fig. 178) [Male: Body dark brown; S1 setae on tergite IX longer than S2 setae, arranged at level of S2 setae, and close to S2 setae; sternites III–VII each with a large transverse pore plate]..................................................... orientalis (in part)
-. Metanotum with irregular shaped reticles rarely with internal wrinkles (Fig. 108); forewing brown with pale base, first vein with setal row complete (Fig. 147); abdominal sternites III to VI with 5–14 discal setae (Fig. 158), abdominal tergite VIII with posteromarginal comb absent (179) [Male: Body yellow; S1 setae on tergite IX slightly anterior to line joining bases of S2 setae; sternites III–VII each with a small transverse pore plate]......................................... parvispinus
5. Forewing with dark cross bands (Fig. 126) [Both sexes bicoloured (Figs. 5, 6); Male: S1 setae on tergite IX subequal to S2, their bases equidistant; sternites III–VII each with an oval pore plate]........................................... arorai
-. Forewing without dark cross bands (Fig. 125, 150).......................................................... 6
6. Pleurotergites with discal setae (Fig. 159).................................................................. 7
-. Pleurotergites without discal setae...................................................................... 10
7. Sternites with 12 setae at posterior margin, III–VI with up to 18 discal setae, VII with about 20 discal setae in a double row (Fig. 159), ocellar III inside the ocellar triangle, behind the fore ocellus (Fig. 74) [Male: Body yellow; S1 and S2 setae on tergite IX arranged in a transverse straight line; sternites III–V each with a narrow transverse pore plate]................ subnudula
-. Sternites with 6 setae at posterior margin, III–VII each with transverse row of 7–11 discal setae across middle (Fig. 160); ocellar III outside or on the tangent of the ocellar triangle (Fig. 47).................................................... 8
8. Body yellow (Fig. 4); postocular setae II and IV well developed (Fig.47); abdominal tergite VIII with posteromarginal comb but absent medially medially [Male: Body yellow; S1 on tergite IX subequal S2 setae and close to S2 setae; sternites III–VII each with a narrow, indistinct, pore plate]............................................................ apicatus
-. Body brown or bicoloured; postocular setae II and IV reduced (Fig. 50);); abdominal tergite VIII with posteromarginal comb complete or present medially............................................................................ 9
9. Body brown (Fig. 30); antennae 8-segmented; metanotum with CPS; abdominal tergite VIII with posteromarginal comb complete [Male: S1 setae on tergite IX ahead to S2 setae; sternites III–VI each with a transverse pore plate]... meridionalis $
-. Body bicoloured (Fig.10), antennae 7-segmented; metanotum without CPS (Fig.89); abdominal tergite VIII with posteromarginal comb present medially.............................................................................. cedri
10. Pronotum with no prominent posteroangular setae [outer posteroangular seta of pronotum about 15–18 microns long, clearly longer than discal setae (Fig. 65)].................................................................... mirus
-. Pronotum with one or two pairs of prominent posteroangular setae (Fig. 53)..................................... 11
11. Body yellow, or sometimes abdomen with brown shade medially (Fig. 12)...................................... 12
-. Body brown to dark brown (Fig. 21)..................................................................... 13
12. Body white; pronotum with 4–5 posteromarginal setae inner to major angulars, inner posteroangulars of pronotum longer than outer posteroangulars (Fig. 79); metanotum with reticulations medially (Fig. 109); tergite II with 3 lateral marginal setae.................................................................................................. safrus
-. Body yellow but abdomen with brown shade medially (Fig. 12); pronotum with 3 posteromarginal setae inner to major angulars (Fig. 53), both outer and inner posteroangulars of pronotum subequal; metanotum with longitudinal striations (Fig. 92); tergite II with 4 lateral marginal setae [Male: Body yellow; tergite IX with S1 setae at level of S2 and slightly shorter than S2, their bases equidistant; sternites III to VII each with an oblong pore plate (Fig. 183)]............................ coloratus
13. Median pair of metanotal setae far behind the anterior margin (Figs. 72, 98, 112, 198, 210)......................... 14
-. Median pair of metanotal setae at or near to the anterior margin (Figs. 85, 95, 97, 117, 119, 120)..................... 19
14. Ovipositor very long, far exceeding end of abdomen (Fig. 162) [metanotum with longitudinal striations (Fig. 98)]................................................................................................... hispidus
-. Ovipositor not exceeding end of abdomen................................................................. 15
15. Antennae 7-segmented (Fig. 204)....................................................................... 16
-. Antennae 8-segmented (Fig. 209)....................................................................... 17
16. Metanotum with longitudinal lines but few connecting lines in middle, metanotal CPS present (Fig. 198); outer posteroangular setae subequal to inner posteroangular setae (Fig. 197); abdominal tergite VIII with posteromarginal comb complete (Fig. 201) [Male: Body light brown; S1 setae on tergite IX longer than S2 and placed at the same transverse level, the distance between S1 setae bases slightly more than the distance between S1 and S2 setae bases, S3 strongly developed and half of the S2 length (Fig. 205); sternites III–VII each with an oval pore plate (Fig. 203)]................................. apricus sp. nov.
-. Metanotum with reticulate sculpture, reticles without faint markings; metanotal CPS absent (Fig. 112); outer posteroangular setae shorter than inner posteroangular setae (Fig. 73); abdominal tergite VIII with posteromarginal comb short and sparse microtrichia (Fig. 177) [Male: S1 and S2 setae on tergite IX not in one transverse line (Fig. 193); sternites III–VII each with transverse pore plate (Fig. 187)]................................................................... speratus
17. Postocular setae arranged in one row; ocellar III inside the ocellar triangle (Fig. 72); metanotal CPS absent (Fig. 111); pleurotergites with dense rows of ciliate microtrichia [metanotum with reticulate sculpture, reticles elongate on posterior half with faint markings; Male: Body brown; S1 setae on tergite IX ahead of level of S2 setae and subequal to S2, their bases equidistant; sternites III to VII each with a broad transverse pore plate]..................................... simplex
-. Postocular setae arranged in two rows; ocellar III at the tangent of ocellar triangle between fore and hind ocelli (Fig. 208); metanotal CPS present (Fig. 210); pleurotergites without rows of ciliate microtrichia............................... 18
18. Metanotum with longitudinal striate sculpture [Male: S1 setae on tergite IX shorter than S2 and arranged slightly anteriorly, distance between S1 setae bases more than the distance between S1 and S2 setae bases]..................... longiceps *
-. Metanotum with reticulate sculpture medially (Fig. 210).................................... hemkundensis sp. nov.
19. Forewing uniformly brown (Figs. 155, 156)............................................................... 20
-. Forewing brown with pale base (Fig. 124)................................................................ 21
20. Antennae 7-segmented; postocular setae I longer than others; metanotum with longitudinal striations except anteromedially, metanotal CPS absent (Fig. 119); tergite II with 3 lateral marginal setae (Fig. 167); abdominal tergite VIII with posteromarginal comb short and irregular [Male: S1 setae on tergite IX slightly shorter than S2 and placed at level of S2, their bases equidistant; sternites III–VII each with transverse or oblong pore plate (Fig. 189)]..................................... trehernei
-. Antennae 8-segmented; all postocular setae small (Fig. 80); metanotum with closely spaced longitudinal striations, metanotal CPS present (Fig. 120); tergite II with 4 lateral marginal setae; abdominal tergite VIII with posteromarginal comb incomplete and absent medially (Fig.173) [Male: S1 setae on tergite IX as long as S2 and close to S2; sternites III–VII each with broad pore plate]....................................................................................... vitticornis
21. First vein of forewing with setal row almost complete [Male: S1 setae on tergite IX longer than S2 and slightly close to S2; sternites III–VII each with broad transverse pore plate]................................................. wedeliae
-. First vein of forewing setal row interrupted medially (Figs. 124, 134, 137)...................................... 22
22. All postocular setae small (Fig. 46) [Antennae 8-segmented; clavus with subapical seta subequal to apical seta and basal discal seta (Fig. 124); Male: Body yellow; tergite VIII with some irregular or no posteromarginal microtrichia; S1 setae on tergite IX longer than S2, their bases equidistant; sternites III–VII each with a transverse, broad pore plate, constricted at middle]................................................................................................. andrewsi
-. Postocular setae I well developed and longer than others (Figs. 56, 60)......................................... 23
23. Clavus with apical veinal seta longer than subapical veinal seta, and basal discal seta (Fig. 137); area near to mesonotal anteromedian CPS with sculpture (Fig.97) [Male: Body yellow; S1 setae on tergite IX almost slightly longer than S2 and their bases equidistant]............................................................................ hawaiiensis
-. Clavus with apical veinal seta shorter than subapical veinal seta, and longer and subequal to basal discal seta (Fig. 134); area near to mesonotal anteromedian CPS without sculpture (Fig. 95) [Male: Body yellow; S1 setae on tergite IX almost longer than S2 and close to S2].............................................................................. florum
24. Pleurotergites with discal setae; (antennae 7-segmented; abdominal tergite VIII with posteromarginal comb complete).... 25
-. Pleurotergites without discal setae...................................................................... 27
25. Ocellar setae III inside ocellar triangle, behind fore ocellus; tergite II with 4 lateral marginal setae [Body brownish yellow [Male tergite IX with S1 longer than S2, arranged at the level of S2, their bases equidistant, sternites III–VII each with a broad transverse pore plate, constricted in middle]......................................................... laurencei
-. Ocellar setae III outside or on the tangent of ocellar triangle; tergite II with 3 lateral marginal setae (Fig. 81)........... 26
26. Body dark brown, forewing dark brown with pale base; ocellar setae III posterolateral to fore ocellus; metanotum with narrowspaced longitudinal anastomosing striae except anteromedially, metanotal CPS present; posterior margin of pleurotergites without microtrichia [Male: Body pale yellow; tergite IX with S1 setae at level of S2 and slightly shorter than S2, their bases equidistant, sternites III–VII each with a broad transverse pore plate]...................................... setosus *
-. Body pale yellow (Fig. 41), forewing unshaded (Fig. 157); ocellar setae III situated between outer margins of fore and hind ocelli (Fig. 81); metanotum with longitudinally anastomosing lines in middle, metanotal CPS absent (Fig. 121); posterior margin of pleurotergites with short and distinct microtrichia [Male: Body pale yellow; S1 setae on tergite IX longer than S2, and close to S2; sternites III–VII each with multiple pore areas arranged in transverse rows (Fig. 191)]............. xenos
27. Forewing with dark cross band (Figs. 131, 136, 140, 153).................................................... 28
-. Forewing completely pale or brown or sometimes with brown in distal ¾ or ½ (Fig. 154, 221)....................... 32
28. Metanotum with CPS (Fig. 116); posterior margin of pronotum with 4 pairs of setae inner to the major angulars; median pair of setae on sternite VII close to posterior margin [ocellar setae III at tangent of ocellar triangle (Fig. 77); metanotum with reticulate sculpture in middle (Fig. 116); forewing first vein with 6 distal setae (Fig 153); tergite II with 3 lateral marginal setae]................................................................................................... taurus
-. Metanotum without CPS, posterior margin of pronotum with 3 pairs of setae inner to the major angulars; median pair of setae on sternite VII in front of posterior margin................................................................ 29
29. Body distinctly bicoloured, head, pronotum, abdominal segments I and VIII–X yellow, segments III–VII brown (Fig. 7); forewing including clavus brown with sub-basal and distal areas pale [metanotum with reticulate sculpture in middle; Male: S1 setae on tergite IX subequal to S2, but slightly anterior to S2, the distance between S1 setae bases more than the distance between S1 and S2 setae bases; sternites III–VII each with a transverse pore plate]............................ atactus
-. Body yellow with brown spots......................................................................... 30
30. Tergite II with 3 lateral marginal setae [Pronotum and abdominal tergites with greyish spots; metanotum with wide apart longitudinal lines of sculpture; abdominal tergite VIII with posteromarginal comb complete].................... garuda
-. Tergite II with 4 lateral marginal setae.................................................................... 31
31. Metanotum with closely spaced longitudinal lines of sculpture (Fig. 91); forewing with one dark cross band; first vein of forewing with 3 distal setae (Fig. 131)................................................................ dorax
-. Metanotum with reticulate sculpture (Fig. 100); forewing with two dark cross bands, first vein of forewing with 2 distal setae (Fig. 140)........................................................................................ latis
32. Metanotum without CPS (Figs. 90, 101, 105, 106, 114, 118, 217).............................................. 33
-. Metanotum with CPS (Figs. 83, 88, 93, 94, 96, 99, 102, 103, 107, 110, 115)..................................... 42
33. Antennae 8-segmented............................................................................... 34
-. Antennae 7-segmented............................................................................... 36
34. Metanotum with closely spaced longitudinal lines (Fig. 118); forewing first vein with 4–5 distal setae (Fig. 154); antennal segment VI densely setose [Antennae dark except pale yellow segment III, Male: S1 setae on tergite IX slightly shorter than S2 and placed at the level of S2, their bases equidistant; sternites III–VII each with a transverse or oblong pore plate].... tectus $
-. Metanotum with not so closely spaced longitudinal lines (Fig. 217); forewing first vein with 3 distal setae (Fig. 221); antennal segment VI not densely setose.......................................................................... 35
35. Pronotum surface smooth; antennal segments IV–VI brown......................................... himalayanus
-. Pronotum with transverse striae (Fig. 219); antennal segments IV–V and basal ¾ of VI pale (Fig. 216)...... rosea sp. nov.
36. Tergite II with 3 lateral marginal setae................................................................... 37
-. Tergite II with 4 lateral marginal setae.................................................................... 39
37. Metanotum with equiangular reticles with internal wrinkles (Fig. 106); forewing uniformly brown, first vein with setal row sometimes complete (Fig. 145)................................................................... orientalis
-. Metanotum with reticulate sculpture medially (Fig. 114); forewing first vein without incomplete setal row (Fig. 151)..... 38
38. Pleurotergites with ciliate microtrichia (Fig. 161); eyes without pigmented facets; forewing first vein normally with 4–7 distal setae (Fig. 151); pronotum with 4 pairs of posteromarginal setae inner to major posteroangulars, median setae slightly longer than other posteromarginals (Fig. 75) [Male: S1 setae on tergite IX subequal in length to S2 and at level of S2 setae, their bases equidistant; sternites III–V each with a transverse narrow pore plate]........................................ tabaci
-. Pleurotergites without ciliate microtrichia; eyes with pigmented facets (Fig. 67); forewing first vein with 1–3 distal setae (Fig. 144); pronotum with 3 pairs of posteromarginal setae inner to major posteroangulars, median setae two times longer than other posteromarginals (Fig. 67).................................................................... nigropilosus
39. Body predominantly yellow, only with dark shadings on abdominal tergites (Figs, 11, 24)........................... 40
-. Body dark brown (Fig. 2)............................................................................. 41
40. Abdominal segments IX and X dark brown (Fig. 24) [Male: S 1 setae on tergite IX slightly longer than S 2, arranged in a transverse row, their bases equidistant; sternites III –VII each with a transverse pore plate]...................... levatus
-. Abdominal segment IX yellow, X yellow but brown in distal half (Fig. 22) [Male: S 1 setae on tergite IX slightly longer than S 2, arranged in a transverse row, their bases equidistant; sternites III –VII each with a transverse pore plate]....... chandni
41. All tibiae and tarsi dark brown, antennal segments III – VI dark brown; metanotum with striate sculpture; forewing first vein with 7 basal and 3 distal setae; abdominal tergite VIII with posteromarginal comb complete................... rostratus
-. All tibiae and tarsi pale; antennal segment III pale, IV and V pale with dark apex, VI pale at base (Fig.2); metanotum with elongate reticulations in middle, reticles with internal markings (Fig. 84); forewing first vein with 7 basal and 4–5 distal setae (Fig. 123), abdominal tergite VIII with posteromarginal comb present laterally [Male: S 1 setae on tergite IX slightly longer than S 2, their bases equidistant; sternites III –VII each with a large oval pore plate].................................. alius
42. Body pale yellow or sometimes with brown shade on abdomen (Figs. 8, 22)..................................... 43
-. Body dark brown.................................................................................... 49
43. Body yellow with brown markings on abdominal tergites, segment X dark brown (Fig. 8).......................... 44 _. Body completely pale yellow.......................................................................... 45
44. Ocellar setae III outside ocellar triangle (Fig. 49); tergite II with 3 lateral marginal setae; abdominal tergite VIII with posteromarginal comb absent [Male: S 1 setae on tergite IX subequal to S 2, but slightly anterior to S 2, their bases equidistant; sternites III –IV each with a large, transverse pore plate]............................................... carthami
-. Ocellar setae III inside ocellar triangle (Fig. 61); tergite II with 4 lateral marginal setae; abdominal tergite VIII with posteromarginal comb complete [Male: S 1 setae on tergite IX subequal to S 2, located at the same level, their bases equidistant; sternites III –VII each with a transverse pore plate].............................................. kodaikanalensis
45. Ocellar seta III outside or at outer tangent of ocellar triangle (Figs. 44, 70); metanotum with longitudinal lines of sculpture (Figs. 83, 107)...................................................................................... 46
-. Ocellar seta III inside ocellar triangle, inserted behind fore ocellus (Figs. 54,55); metanotum with longitudinal reticles in middle (Figs. 93, 94)....................................................................................... 48
46. Pleurotergites with sparse dentate microtrichia; forewing slightly infumated; metanotum with reticulate sculpture medially [Male: sternites III –VII each with a transverse pore plate]............................................. pallidulus
-. Pleurotergites without microtrichia; forewing pale; metanotum with longitudinal lines of sculpture.................... 47
47. Lines of sculpture in middle of metanotum posteriorly converging mesad (Fig. 107); antennal segment VI not broader than III usually narrower, tergites III and IV with seta S 2 of about the same size as S 3, antennal segments IV and V often pale basally [Male: S 1 setae on tergite IX subequal to S 2, their bases equidistant; sternites III –VII each with transverse pore plate (Fig. 186)].......................................................................................... palmi
-. Lines of sculpture in middle of metanotum posteriorly not converging mesad (Fig. 83), antennal segment VI broader than III, tergites III and IV with S 2 weaker and shorter than S 3, antennal segments IV and V dark brown [Male: S 1 setae on tergite IX subequal to S 2, their bases equidistant; sternites III –VII each with oval pore plate]............................. alatus
48. Pronotum on either side with a pair of dark stout anteromarginal setae, and one such sublateral seta (Fig. 54) [Male: sternites III – V each with narrow transverse pore plate]...................................................... flavidulus
-. Pronotum without especially developed dark and stout setae on anterior margin or on sides (Fig. 55) [Male: sternites III –VII each with fairly broad narrow transverse pore plate]..................................................... flavus
49. Ocellar III outside ocellar triangle (Figs. 57, 66, 69)........................................................ 50
-. Ocellar III inside ocellar triangle (Figs. 64, 76)............................................................ 52
50. Tergite II with 4 lateral marginal setae (Fig. 168)................................................... formosanus
-. Tergite II with 3 lateral marginal setae (Fig. 163............................................................ 51
51. Forewing slightly infumated (Fig. 148); antennal segments I, II and base of III yellow, all femora and tibia yellowish brown in middle, tarsi yellow........................................................................... sensarmai
-. Forewing brown but proximal 1/4 pale; antennal segments I, II brown and III yellowish brown, all femora brown with apices yellow, tibiae and tarsi yellowish brown............................................................. moundi
52. Metanotum with polygonal reticulate sculpture, reticles with internal markings (Fig.102); forewing first vein with complete row of setae (Fig. 142); abdominal tergite VIII with posteromarginal comb absent [Male: S 1 setae on tergite IX slightly longer than S 2 setae, and at or slightly anterior to level of S 2 setae, their bases equidistant; sternites III-VII each with large transverse pore plate (Fig. 184)]................................................................................. malloti
-. Metanotum with longitudinal lines of sculpture, sometimes with few striae (Fig. 115); forewing first vein with 7 basal and 3 distal setae, abdominal tergite VIII with posteromarginal comb complete (Fig. 152) [Male: S 1 setae on tergite IX subequal to S 2, located at the same level, their bases equidistant; sternites III –IV each with large transverse pore plate (Fig. 188)].................................................................................................... tanicus
description: Published as part of Tyagi, Kaomud, Pal, Shash, Sarma, Madhurima & Kumar, Vikas, 2025, Identification key to the species of genus Thrips (Thysanoptera, Thripidae) from India with three new species and one new record, pp. 273-302 in Zootaxa 5566 (2) on pages 285-292, DOI: 10.11646/zootaxa.5566.2.3, http://zenodo.org/record/14702878