Odonaspis, Leonardi, 1897

Chen, Qian, Jian, Qian & Xing, Jichun, 2024, A new species of Odonaspis Leonardi, 1897 (Hemiptera: Coccomorpha: Diaspididae) from China, Zootaxa 5428 (2), pp. 290-300 : 297-299

Key to species of Odonaspis (adult females)

1(0) Perivulvar pores absent................................................................................ 2

- Perivulvar pores present............................................................................... 13

2(1) Posterior spiracles without disc-pores..................................................................... 3

- Posterior spiracles with disc-pores....................................................................... 4

3(2) Postvulvar sternite with microducts; dorsum of head and thorax without microducts....................... O. siamensis

- Postvulvar sternite without microducts; dorsum of head and thorax with microducts......................... O. sparsa

4(2) Vulva situated anterior to level of anal opening .............................................................. 5

- Vulva situated at, or posterior to, level of anal opening...................................................... 10

5(4) Pygidial scleroses absent............................................................................... 6

- Pygidial scleroses present, numbering 2 pairs............................................................... 8

6(5) Each anterior spiracle associated with fewer than 10 disc-pores......................................... O. rugosa

- Each anterior spiracle associated with more than 20 disc-pores................................................. 7

7(6) Antennae situated marginally; postvulvar sternite without microducts................................. O. tapahensis

- Antennae set well away from margin; postvulvar sternite with microducts................................ O. lingnani

8(5) Margin of abd. VIII forming 1 pronounced projection, rounded apically.................................. O. pacifica

- Margin of abd. VIII forming 2 projections .................................................................. 9

9(8) Each posterior spiracle associated with 2–6 disc-pores; abd. VII with a large triangular projection on each margin, exceeding projections on abd. VIII.............................................................. O. renhuaiensis sp. nov.

- Each posterior spiracle associated with a dense group of small disc-pores, numbering more than 20; abd. VII with a small triangular projection on each margin, not exceeding projections on abd. VIII............................ O. densipora

10(4) Pygidial scleroses absent...................................................................... O. graminis

- Pygidial scleroses present, numbering 2 pairs.............................................................. 11

11(10) Vulva situated posterior to level of anal opening..................................................... O. texana

- Vulva situated about level with anal opening ............................................................... 12

12(11) Margin of abd. VIII with 2 triangular projections, separated from each other by pointed emargination; dorsum of abd. VIII with 8–14 ducts............................................................................... O. stipagrostis

- Margin of abd. VIII with 2 triangular projections, separated from each other by straight, transverse margin; dorsum of abd. VIII with 26–46 ducts ........................................................................... O. sabulincola

13(1) Posterior spiracles without associated disc-pores ............................................................ 14

- Posterior spiracles each associated with disc-pores......................................................... 16

14(13) Perivulvar pores present anteriorly and laterally to vulva..................................................... 15

- Perivulvar pores only present laterally to vulva................................................... O. paucipora

15(14) Gland tubercles present submarginally on venter of thorax .......................................... O. arcusnotata

- Gland tubercles absent......................................................................... O. secreta

16(13) Pygidial scleroses absent.............................................................................. 17

- Pygidial scleroses present............................................................................. 18

17(16) Vulva situated about level with anal opening; perivulvar pores forming 3 groups.......................... O. floridana

- Vulva situated posterior to level of anal opening; perivulvar pores forming 2 groups..................... O. trispatulata

18(16) With only 1 pair of pygidial scleroses.................................................................... 19

- With more than 1 pair of pygidial scleroses................................................................ 22

19(18) Vulva situated anterior to level of anal opening............................................................ 20

- Vulva situated posterior to level of anal opening............................................................ 21

20(19) Perivulvar pores forming 3 groups, present anteriorly and laterally to vulva.............................. O. morrisoni

- Perivulvar pores forming 2 groups, each group situated laterally to vulva............................. O. schizostachyi

21(19) Gland tubercles present on thorax.............................................................. O. bromeliae

- Gland tubercles absent from thorax................................................................ O. ruthae

22(18) With only 2 pairs of pygidial scleroses................................................................... 23

- With more than 2 pairs of pygidial scleroses............................................................... 39

23(22) Vulva situated anterior to level of anal opening............................................................ 24

- Vulva situated at, or posterior to, level of anal opening...................................................... 28

24(23) Perivulvar pores present anteriorly and laterally to vulva..................................................... 25

- Perivulvar pores only present laterally to vulva............................................................ 27

25(24) Gland tubercles absent........................................................................ O. spinulata

- Gland tubercles present............................................................................... 26

26(25) Each posterior spiracle associated with 0–5 disc-pores............................................. O. oshimaensis

- Each posterior spiracle associated with 10–27 disc-pores.......................................... O. miyakoensis

27(24) Postvulvar sternite sclerotized, with ducts present only along its intersegmental furrow....................... O. greenii

- Postvulvar sternite not sclerotized, with ducts present throughout sternite........................... O. bouldersensis

28(23) Vulva situated at about level of anal opening ............................................................... 29

- Vulva situated posterior to level of anal opening........................................................... 31

29(28) Gland tubercles absent from thorax.......................................................... O. tsinjoarivensis

- Gland tubercles present on thorax....................................................................... 30

30(29) Anterior spiracles each associated with 2–6 disc-pores; median group of perivulvar pores containing 5–16 pores... O. anneckei

- Anterior spiracles each associated with 24–45 disc-pores; median group of perivulvar pores containing 14–39 pores................................................................................................... O. benardi

31(28) Gland tubercles absent from thorax...................................................................... 32

- Gland tubercles present on thorax....................................................................... 35

32(31) Postvulvar sternite without ducts............................................................. O. maasinensis

- Postvulvar sternite with ducts.......................................................................... 33

33(32) Cuticular striations with small projections set at right angles to cuticle............................... O. bambusarum

- Cuticular striations without projections................................................................... 34

34(33) Abd. VIII with 1 notch on each lateral margin; perivulvar pores forming continuous band anterior and lateral to vulva............................................................................................. O. australiensis

- Margin of abd. VIII without notches; perivulvar pores forming 3 separate groups, 1 median and 2 lateral.......... O. panici

35(31) Dorsum of prothorax with 1 cicatrix on each side, level with mouthparts............................ O. galapagoensis

- Dorsum of prothorax without cicatrices................................................................... 36

36(35) Gland tubercles forming 1 cluster on each margin at level of clypeolabral shield; perivulvar pores numbering 124–179 in each lateral group.............................................................................. O. phragmitis

- Gland tubercles forming 2 clusters on each thoracic margin; perivulvar pores numbering no more than 90 in each lateral group................................................................................................... 37

37(36) With median dorsal intersegmental line visible between abd. V and VI; ducts present dorsally on submedian area of abd. IV........................................................................................ O. transkeiensis

- Without median dorsal intersegmental line between abd. V and VI; without ducts on dorsum in submedian area of abd. IV... .................................................................................................. 38

38(37) Emargination on apex of abd. VIII without marginal microducts; inner ends of pygidial scleroses tapering... O. saccharicaulis

- Emargination on apex of abd. VIII with 2–5 marginal microducts; inner ends of pygidial scleroses rounded..... O. litorosa

39(22) Vulva situated anterior to level of anal opening............................................................ 40

- Vulva situated at, or posterior to, level of anal opening ....................................................... 42

40(39) Postvulvar sternite with ducts only present on each side..................................................... 41

- Postvulvar sternite with ducts present throughout sternite.............................................. O. procera

41(40) Perivulvar pores present anteriorly and laterally to vulva............................................ O. collarifera

- Perivulvar pores only present laterally to vulva..................................................... O. serrata

42(39) Vulva situated at about level of anal opening.............................................................. 43

- Vulva situated posterior to level of anal opening................................................ O. batarazaensis

43(42) Pygidial scleroses numbering 3 pairs; posterior spiracles each associated with 1–2 pores.................... O. aristidae

- Pygidial scleroses numbering 4 pairs; posterior spiracles each associated with 14–21 pores.................. O. crenulata