Carientothrips species

Eow, Li-Xin, 2014, Australian species of spore-feeding Thysanoptera in the genera Carientothrips and Nesothrips (Thysanoptera: Idolothripinae), Zootaxa 3821 (2), pp. 193-221 : 195-196

Key to Carientothrips species from Australia

1. Metanotum anteromedially, with 2–10 setae in addition to the median pair of major setae ( Figs 37–39 ); notopleural sutures incomplete (see Fig. 15 )................................................................................ 2

-. Metanotum with only one pair of major setae medially ( Figs 31, 34 ), sometimes with one small pair midlaterally; notopleural sutures usually complete............................................................................... 5

2. Antennal segment III with sharp-edged swelling near base ( Fig. 29 )............................................ acti

-. Pedicel of antennal segment III not or scarcely swollen (see Figs 24–26 ).......................................... 3

3. Pronotal am setae as long as aa setae ( Fig.10 )....................................................... horni sp.n.

-. Pronotal am setae no longer than pronotal discal setae (see Fig. 15 )............................................. 4

4. Antennal segment III less than 2.3 times as long as wide ( Fig. 25 )............................................ reedi

-. Antennal segment III more than 2.6 times as long as wide ( Fig. 26 ).......................................... vesper

5. Antennal segment III with sharp-edged swelling near base ( Fig. 30 )......................................... pictilis

-. Pedicel of antennal segment III not swollen................................................................. 6

6. Head ( Fig. 11 ), metanotum and tergites strongly reticulate, surface of fore femora with distinctive sculpture; tube with longitudinal ridges on basal third ( Fig. 23 ).............................................................. calami sp.n.

-. Head, metanotum, tergites and fore femora not strongly sculptured; tube without ridges............................. 7

7. Compound eyes ventrally with no ommatidia displaced to posterior ( Fig. 6 )...................................... 8

-. Compound eyes ventrally with one or more ommatidia displaced to posterior ( Figs 7–9 )............................ 14

8. Body, legs and antennae dark brown, except paler pedicel of antennal III and apex of tube; pronotal am setae weakly capitate and as long as aa setae.......................................................................... casuarinae

-. At least yellow in part on head, antennae, or legs; pronotal am setae acute and/or shorter than aa setae................. 9

9. Tergites IV–VI with setae S1 arising near posterior margin, as long and acute as S2 and extending far beyond posterior margin of tergite; wing-retaining setae straight and acute ( Fig. 46 )............................................. snowi sp.n.

-. Tergites IV–VI with setae S1 usually near median campaniform sensilla (see Fig. 45 ), and much smaller than S2; wing-retaining setae curved (when present)........................................................................ 10

10. Antennal segment IV slender, 3.2 times as long as wide................................................. magnetis -. Antennal segment IV no more than 3.0 times as long as wide.................................................. 11

11. Head and antennal segment I uniformly brown, head almost as dark as abdomen........................ alienatus sp.n.

-. Head and antennal segment I yellow to brownish-yellow, paler than abdomen.................................... 12

12. Head distinctly yellow on anterior area and between compound eyes but shaded brown posterolaterally [antennal segment I yellow] ( Fig. 14 )............................................................................ palumai sp.n.

-. Head and pronotum brownish-yellow but abdomen darker, head not distinctly paler on anterior area (see Fig. 12 )........ 13

13. Tergite IX setae less than 0.8 as long as tube with apices broadly blunt; tergites IV–VI of apterous females with median transverse row of 10–20 equally small setae (males often with fewer setae); tergal wing-retaining setae of apterae minute, length less than 15 microns ( Fig. 44 )..................................................................... semirufus

-. Tergite IX setae about as long as tube with apices pointed to finely acute; tergites IV–VI of apterae with median transverse row of 6–10 setae with median pair longer than lateral pairs, and wing-retaining setae 25–50 microns long ( Fig. 45 )...... loisthus

14. Females with tube sharply yellow in distal third or half ( Fig. 22 ) (but brownish yellow in males); head not projecting in front of eyes; usually apterous without ocelli................................................................. miskoi

-. Tube uniformly dark brown in both sexes, sometimes shading to weakly paler in distal third; head with short projection in front of eyes (see Figs 1, 2, 9 ); wing morphs variable, ocelli present in aptera......................................... 15

15. Antennal segment VI sub-spherical/ovoid and sharply constricted to narrow pedicel ( Fig. 28 ).................. pedicillus

-. Antennal segment VI longer, at least elongate ovoid......................................................... 16

16. Compound eye ventrally with two or three ommatidia displaced to posterior ( Fig. 9 ); antennal segment I clear yellow [Mid and hind tibiae varying from brown to brownish yellow, but never sharply clear yellow in contrast to brown femora].................................................................................................... tasmanica sp.n.

-. Compound eye ventrally with only one ommatidium displaced to posterior; antennal segment I brown................. 17

17. All tibiae sharply clear yellow in contrast to brown femora............................................... flavitibia

-. Mid and hind tibiae largely brown, concolorous with femora............................................. mjobergi

Figures

FIGURES 37–43. Carientothrips species. Metathorax and pelta: (37) horni, (38) acti, (39) vesper, (40) loisthus, (41) semirufus. Pelta: (42) palumai, (43) miskoi.

FIGURES 10–15. Carientothrips species. Head: (10) horni, (11) calami, (12) semirufus, (13) snowi, (14) palumai, (15) vesper.

FIGURES 31–36. Carientothrips species. Metathorax and pelta: (31) calami, (32) tasmanica, (33) mjobergi, (34) snowi. Pelta: (35) flavitibia. Thoracic sternites: (36) alienatus.

FIGURES 21–30. Carientothrips species. Tergites VIII–X (tube): (21) snowi. Tergites IX–X (tube): (22) miskoi female, (23) calami. Antenna segments III–VIII: (24) horni, (25) reedi, (26) vesper, (27) magnetis, (28) pedicillus. Antennal segments III–IV: (29) acti, (30) pictilis.

FIGURES 1–9. Carientothrips species. Head: (1) mjobergi, (2) flavitibia, (3) tasmanica, (4) alienatus major male, (5) loisthus macropterae. Ventral eye surface: (6) alienatus, (7) miskoi, (8) flavitibia, (9) tasmanica.

FIGURES 44–46. Carientothrips species. Tergites: (44) semirufus female segments II–III, (45) loisthus segments III–V, (46) snowi pelta and segment II–IV.