Scirtothrips

Hoddle, Mark S. & Mound, Laurence A., 2003, The genus Scirtothrips in Australia (Insecta, Thysanoptera, Thripidae), Zootaxa 268, pp. 1-40 : 8-10

publication ID

https://doi.org/ 10.5281/zenodo.157021

publication LSID

lsid:zoobank.org:pub:D03EBF36-25FC-4294-A36B-4614392064B3

DOI

https://doi.org/10.5281/zenodo.3501191

persistent identifier

https://treatment.plazi.org/id/0391C840-FFEE-9970-8347-FECBFAC8C93E

treatment provided by

Plazi

scientific name

Scirtothrips
status

 

Key to Australian Scirtothrips View in CoL species

1. Abdominal sternites IV – VI with microtrichia extending fully across ( Figs 52, 54 View FIGURES 51 ­ 56 )... 2

­. Abdominal sternites IV – VI with microtrichia not extending across median area ( Figs 51, 55, 56 View FIGURES 51 ­ 56 ) ..................................................................................................................... 3

2. Forewing posteromarginal cilia straight; ocellar setae III arising between midpoint of posterior ocelli ( Figs 6, 7 View FIGURES 1 ­ 10 ); metanotal median setae arise well behind anterior margin; tergite IX of female with many discal microtrichia medially; male hind femora without comb of stout setae, and tergite IX without drepanae ............................. dorsalis View in CoL Hood

­. Forewing posteromarginal cilia undulating; ocellar setae III arising between anterior margins of posterior ocelli ( Fig. 3 View FIGURES 1 ­ 10 ); metanotal median setae arise close to anterior margin; tergite IX of female without discal microtrichia medially; male hind femora with comb of stout setae ( Fig. 37 View FIGURES 32 ­ 37 ), and tergite IX with drepanae .................. aurantii View in CoL Faure

3. Postocular setal row with 3 or 4 pairs of setae each as long as ocellar setae III ( Figs 2, 9 View FIGURES 1 ­ 10 , 17 View FIGURES 11 ­ 20 ); males where known without drepanae on tergite IX ......................................... 4

­. Postocular setal row with 2 (or 1) pairs of setae as long as ocellar setae III ( Figs 1, 5 View FIGURES 1 ­ 10 , 14 View FIGURES 11 ­ 20 ); males usually with drepanae on tergite IX ............................................................ 8

4. Metanotal sculpture transversely striate or reticulate on posterior as well as anterior ( Fig. 35 View FIGURES 32 ­ 37 ); pronotal posterior margin with 4 pairs of setae; tergites IV – VI with discal setae S1 half as long as S2, distance between bases of S1setae more than twice their length ................................................................................................ helenae View in CoL Palmer & Mound

­. Metanotal sculpture transverse on anterior but longitudinal on posterior half ( Figs 21 View FIGURES 21 ­ 31 , 32 View FIGURES 32 ­ 37 ); pronotum with 5 pairs of posteromarginal setae; tergites IV – VI with discal setae S1 as long as S2, distance between bases of S1 setae about twice the diameter of their basal pores ..................................................................................................................... 5

5. Pronotal posteromarginal setae all equally short, or at least S2 no more than 1.3 as long as S1 ................................................................................................. eremicus View in CoL sp.n.

­. Pronotal posteromarginal setae S2 longer, at least 1.5 as long as S1........................... 6

6. Sternites IV – VI with median marginal setae arising in front of sternal margin ( Fig. 55 View FIGURES 51 ­ 56 ); tergite VIII marginal comb complete medially .................. albomaculatus View in CoL Bianchi

­. Sternal marginal setae all arise at margin ( Figs 53, 56 View FIGURES 51 ­ 56 ); tergite VIII marginal comb often interrupted medially ( Fig. 45 View FIGURES 45 ­ 50 ) .............................................................................. 7

7. Pronotal discal setae short, stout and blunt ................................................ astibos View in CoL sp.n.

­. Pronotal setae all slender, tapering to apex ................................................. pilbara View in CoL sp.n

8. Antennae 7­segmented, suture between VII – VIII not developed ............................... 9

­. Antennae8­segmented,suturebetween VII–VIIIusually well­developedbutrarely weak ..................................................................................................................................... 10

9. Body dark brown, head very dark ( Fig. 20 View FIGURES 11 ­ 20 ); pronotal posteromarginal setae S2 about 30 microns long, scarcely longer than width of antennal segment II ............ solus View in CoL sp.n.

­. Body yellow with brown markings ( Fig. 5 View FIGURES 1 ­ 10 ); pronotal posteromarginal setae S2 about 50 microns long, twice as long as width of antennal segment II ...................................

.......................................................................................... casuarinae View in CoL Palmer & Mound 10. Abdominal tergite VII with posteromarginal fringe of microtrichia extending mesad of discal setae II, usually complete medially ( Fig. 48 View FIGURES 45 ­ 50 ) ...................................... litotes View in CoL sp.n.

­. Abdominal tergite VII with posteromarginal fringe of microtrichia not extending mesad of discal setae II ( Figs 45­47 View FIGURES 45 ­ 50 ) .......................................................................... 11

11. Occipital ridge close to posterior margin of eye ( Fig. 18 View FIGURES 11 ­ 20 ), postocular region shorter than diameter of one ommatidium in female, about equal to one ommatidium in male; mouth cone unusually long and slender ...................................... tenor View in CoL Bhatti & Mound

­. Occipital ridge not close to posterior margin of eye, postocular region longer, equal to diameter of two ommatidia; mouth cone usually not extending beyond fore coxae... 12

12. Ocellar triangle without any regular lines of sculpture between posterior ocelli ( Figs 1 View FIGURES 1 ­ 10 , 13, 19 View FIGURES 11 ­ 20 ) ......................................................................................................................... 13

­. Ocellar triangle with regular lines of sculpture between posterior ocelli, either transversely striate or transversely reticulate ( Figs 6 View FIGURES 1 ­ 10 , 11, 14 View FIGURES 11 ­ 20 )............................................. 17

13. Postocular setal row with only 1 pair of setae as long as ocellar setae III; major setae on head, thorax and forewings bluntly thickened ( Fig. 16 View FIGURES 11 ­ 20 ) ...................... moneres View in CoL sp.n.

­. Postocular setal row with 2 pairs of setae as long as ocellar setae III; major setae all slender and setiform ( Figs 13, 19 View FIGURES 11 ­ 20 )............................................................................... 14

14. Abdominal tergite I with pair of setae (figs 36, 41); mouth cone extending to mesosternum; male with drepanae on tergite IX 1.5 times as long as median length of this tergite (Fig. 57)....................................................................................... drepanofortis View in CoL sp.n.

­. Abdominal tergite I with no setae ( Fig. 33 View FIGURES 32 ­ 37 ); mouth cone scarcely extending beyond fore coxae; male drepanae (where known) 0.6 as long as tergite .............................. 15

15. Body uniformly brown; pronotal posteromarginal setae S2 scarcely 0.5 as long as median width of antennal segment II; sternites III – V commonly with 4 pairs of marginal setae ( Fig. 56 View FIGURES 51 ­ 56 ) ............................................................................... quadriseta View in CoL sp.n.

­. Body yellow with extensive and variable brown markings on head, thorax and abdomen; pronotal posteromarginal setae S2 at least 0.8 as long as median width of antennal segment II ( Fig. 13 View FIGURES 11 ­ 20 ); sternites III – V with 3 pairs of marginal setae ................... 16

16. Abdominal tergites III – V with distance between basal pores of median setae less than 1.5 times the length of these setae ( Fig. 33 View FIGURES 32 ­ 37 ); female tergite IX with three pairs of equally stout posteromarginal setae ( Fig. 38 View FIGURES 38 ­ 44 ); tergite IX dark brown, darker than tergite VIII ......................................................................................................... akakia View in CoL sp.n.

­. Abdominal tergites III – V with distance between basal pores of median setae at least 2.5 times the length of these setae ( Fig. 38 View FIGURES 38 ­ 44 ); female tergite IX with two pairs of equally stout posteromarginal setae with a small slender pair of setae between them; tergite IX yellowish, paler than VIII ............................................................................ kirrhos View in CoL sp.n.

17. Forewing posterior margin with all cilia straight without any undulations ................ 18

­. Forewing posterior margin with at least one or two cilia near basal half of wing not straight, sometimes with all cilia weakly to strongly undulating................................ 19

18. Ocellar setae III long, about twice as long as median length of one posterior ocellus ( Fig. 12 View FIGURES 11 ­ 20 ); abdominal tergites with 4 to 6 setae on each lateral microtrichial field ( Fig. 44 View FIGURES 38 ­ 44 ); tergite VIII with microtrichia medially near anterior margin; male tergite IX without paired drepanae .............................................................................. inermis Priesner View in CoL

­. Ocellar setae III scarcely longer than median length of a posterior ocellus ( Fig. 10 View FIGURES 1 ­ 10 ); abdominal tergites with 3 setae on each lateral microtrichial field; tergite VIII without microtrichia medially near anterior margin; male tergite IX with pair of curved drepanae ........................................................................................................... dobroskyi View in CoL Moulton

19. Ocellar setae III wide apart, arising on or outside anterior margins of ocellar triangle ( Fig. 14 View FIGURES 11 ­ 20 ) ........................................................................................... longipennis View in CoL Bagnall

­. Ocellar setae III arising within ocellar triangle, usually closer together than diameter of first ocellus ( Figs 4 View FIGURES 1 ­ 10 , 11 View FIGURES 11 ­ 20 ) .......................................................................................... 20

20. Pronotum with transverse striae widely separated, anterior half of pronotum with several striae further apart than diameter of a discal seta basal pore ( Fig. 11 View FIGURES 11 ­ 20 ); ocellar setae III arising between midpoints of posterior ocelli, posterior to tangent between anterior margins of these ocelli; pronotal posterior margin with more than one pair of setae longer than maximum diameter of antennal segment III ........................... frondis View in CoL sp.n.

­. Pronotum with transverse striae closely spaced, anterior half of pronotum with striae closer together than diameter of a discal seta basal pore; ocellar setae III arising on or anterior to tangent between anterior margins of posterior ocelli ( Fig. 4 View FIGURES 1 ­ 10 ); pronotal posterior margin with only setae S2 longer than maximum diameter of antennal segment III ............................................................................................................... australiae View in CoL Hood

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Thysanoptera

Family

Thripidae

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