Apelaunothrips

Mound, Laurence A., 2013, Species diversity in the Palaeotropical leaf-litter genus Apelaunothrips (Thysanoptera, Phlaeothripinae), Zootaxa 3741 (1), pp. 181-193 : 186-187

Key to species of Apelaunothrips

[developed largely from published descriptions]

1. Body and head almost entirely yellow, only tube brown....................................................... 2

-. Body either brown or bicoloured yellow and brown, if largely yellow then at least tergite IX brown.................... 3

2. Antennal segments IV–VIII uniformly dark brown ( Fig. 18 ); pronotal am setae acute, less than 20 microns long [pronotal notopleural sutures not fully complete; fore wing with no duplicated cilia]............................. desleyae sp.n.

-. Antennal segments IV–VII brown with base yellow; pronotal am setae capitate, more than 40 microns long......... lucidus

3. Antennal segment IV with 2 sensoria...................................................................... 4

-. Antennal segment IV with 3 or 4 (5?) sensoria............................................................... 5

4. Interocellar setae acute; mesonotum with 12–14 setae..................................................... lieni

-. Interocellar setae weakly capitate; mesonotum with 2–4 setae.............................................. indicus

5. Antennal segment IV with 3 sensoria...................................................................... 6

-. Antennal segment IV with 4 (5?) sensoria................................................................. 16

6. Antennal segment III with 2 sensoria...................................................................... 7

-. Antennal segment III with 3 sensoria..................................................................... 10

7. Eyes prolonged ventrally........................................................................ cephalicus

-. Ventral length of eyes no longer than dorsal length........................................................... 8

8. Pronotum and abdominal segments II–III yellow............................................. medioflavus [in part]

-. Pronotum and abdominal segments II–III brown............................................................. 9

9. Antennae slender, IV at least 2.5 times as long as wide; pelta bell-shaped with campaniform sensilla............... tasmani

-. Antennae less slender, IV less than 2.3 times as long as wide; pelta trapezoidal without campaniform sensilla.... hainanensis

10. Abdominal segments III–IV yellow...................................................................... 11

-. Abdominal segments III–IV brown....................................................................... 12

11. Abdominal segments I–VII yellow, III–VI with small brown anterior marking................................. luridus

-. Abdominal segment II and VI–IX brown................................................... medioflavus [in part]

12. Abdomen bicoloured.................................................................................. 13

-. Abdomen uniformly brown............................................................................. 15

13. Abdominal segments I and IX yellow, II–VIII brown.................................................... zonatus

-. Abdominal segment IX brown, either or both V and VI yellow................................................. 14

14. Abdominal segments I and V yellow, VI brown..................................................... madrasensis

-. Abdominal segment I brown, V and VI yellow........................................................... leios

15. Head 1.4 times as long as width..................................................................... haradai

-. Head 1.2 times as long as width....................................................................... aokii

16. Body not uniformly brown, often bicoloured............................................................... 17

-. Body uniformly brown................................................................................ 28

17. Head uniformly brown................................................................................ 18

-. Head yellow at least in part............................................................................. 22

18. Eyes prolonged posteriorly on ventral surface of head ( Fig. 8 )............................................ ocularis

-. Eyes not longer ventrally than dorsally.................................................................... 19

19. Antennal segment VIII not constricted at base......................................................... fasciatus

-. Antennal segment VIII constricted to short basal neck ( Fig. 20 )................................................ 20

20. Eyes about as long as postocular length of vertex..................................................... japonicus

-. Dorsal eye length less than postocular length of vertex....................................................... 21

21. Legs, pronotum, and abdomen yellow................................................................ bicolor

-. Femora dark brown, pronotum and abdominal segments II and IX brown, III–VIII brown laterally........... gombak sp.n.

22. Vertex fully reticulate medially; antennal segment VIII strongly constricted at base................................ 23

-. Median area of vertex without sculpture; antennal segment VIII base variable..................................... 25

23. Abdominal segment III brown; tube brown with basal fifth yellow.......................................... tricolor

-. Abdominal segment III yellow; tube brown with only extreme base yellow....................................... 24

24. Femora yellow; pointed mouth cone extends to posterior margin of prothorax................................ rostratus

-. Femora brown or shaded with brown; mouth cone not extending across prosternum......................... marginalis

25. Abdominal segment II brown, clearly darker than segments III–V.............................................. 26

-. Abdominal segment II equally yellow as segments III–V..................................................... 27

26. Head less than 1.2 times as long as wide ( Fig. 2 ); cheeks with one pair of prominent setae; antennal segment VIII with distinct basal neck ( Fig. 16 )............................................................................ bogor sp.n.

-. Head more than 1.3 times as long as wide; cheeks with several prominent setae; antennal segment VIII weakly constricted at base........................................................................................... spinalis

27. Antennal segment VIII weakly constricted at base...................................................... limbatus

-. Antennal segment VIII strongly constricted at base.................................................... longidens

28. Head 1.1 times as long as wide or less.................................................................... 29

-. Head more than 1.1 times as long as wide................................................................. 32

29. Vertex with transverse lines of sculpture medially........................................................... 30

-. Vertex with no sculpture medially........................................................................ 31

30. Fore wings colourless............................................................................ bhowalii

-. Fore wings shaded pale brown................................................................. philippinensis

31. Mid and hind tibiae dark brown with paler apices.................................................... nigripennis

-. Mid and hind tibiae yellow...................................................................... simpliceps

32. Fore wing sub-basal setae S3 capitate..................................................................... 33

-. Fore wing sub-basal setae S3 acute or softly pointed......................................................... 35

33. Vertex finely sculptured medially................................................................. gabonensis

-. Vertex with no sculpture medially........................................................................ 34

34. Head 1.2 times as long as wide; hind tibiae brown.................................................. maculipennis

-. Head about 1.5 times as long as wide; hind tibiae yellow............................................... montanus

35. Fore tarsus with small tooth on inner margin; fore femora with basal tubercle in both sexes..................... armatus

-. Fore tarsus with no tooth; fore femora without basal tubercle on inner margin..................................... 36

36. Tergite IX setae S1 and S2 with apices sharply pointed....................................................... 37

-. Tergite IX setae S1 and S2 with apices weakly expanded or softly pointed........................................ 38

37. Postocellar setae about as long as longitudinal diameter of an ocellus..................................... flavicornis

-. Postocellar setae much longer than longitudinal diameter of an ocellus................................... malayensis

38. Postocellar setae minute; pelta bell-shaped........................................................... femoralis

-. Postocellar setae longer than longitudinal diameter of an ocellus ( Fig. 3 ); pelta subtriangular.................. consimilis

Figures

FIGURES 16 – 22. Apelaunothrips species, antennae. (16) bogor sp. n.; (17) consimilis; (18) desleyae sp. n.; (19) flavicornis; (20) gombak sp. n.; (21) madrasensis; (22) medioflavus.

FIGURES 5 – 8. Apelaunothrips species, head & pronotum. (5) madrasensis; (6) medioflavus from East Timor; (7) desleyae sp. n.; (8) ocularis ventral surface of head.

FIGURES 1 – 4. Apelaunothrips species, head & pronotum. (1) aokii; (2) bogor sp. n.; (3) consimilis; (4) gombak sp. n.