Lordomyrma, Emery, 1897

Key to the known species of Lordomyrma View in CoL based on worker caste

The following identification key is novel and constitutes the first such key for the genus.

1 In full-face view, from center of frons to posterior margin of head smooth and shining ( Fig.24 View Figs )· ............................................................................2

- In full-face view, from center of frons to posterior margin of head coarsely rugose or reticulate ( Figs. 25-26 View Figs ) ....................................................17

2(1) Promesonotum strongly convex and subglobose ( Fig. 27 View Figs ); propodeal spines very long, equal to or longer than propodeal dorsum, strongly diverging and out-curved ( Fig. 28 View Figs ) .......................3

- Promesonotum not so strongly convex as above ( Fig. 29 View Figs ); propodeal spines shorter than propodeal dorsum, straight or curved, not so strongly diverging and out-curved ( Fig. 30 View Figs ) ....................4

3(2) In profile view, apex of propodeal spine up-curved; top of postpetiole with short acute spine ( Fig. 31 View Figs ) (New Guinea)........................................ .................................. L. crawleyi Menozzi, 1923 View in CoL

- In profile view, apex of propodeal spine straight; top of postpetiole rightly angled, without acute spine ( Fig.32 View Figs ) (New Guinea, New Caledonia)..... .................................... L. furcifera Emery, 1897 View in CoL

4(2) In profile view, metanotal groove absent ( Fig. 33 View Figs ) .............................................................5

- In profile view, metanotal groove distinctly impressed ( Fig. 34 View Figs ) ................................................6

5(4) Head square, as broad as long ( Fig. 35 View Figs ); sides of head longitudinally striate; in profile view, top of postpetiole bluntly angled ( Fig. 36 View Figs ) (New Guinea)......... L. nigra Donisthorpe, 1941 View in CoL

- Head rectangular, distinctly longer than broad ( Fig. 37 View Figs ); sides of head smooth; in profile view, top of postpetiole roundly convex ( Fig. 38 View Figs ) (New Guinea)...................... L. accuminata Stitz, 1912 View in CoL

6(4) In profile view, top of petiolar node with a sharp spine ( Fig. 39 View Figs ) ..........................................7

- In profile view, top of petiolar node without a sharp spine, at most acutely angled ( Figs. 40-42 View Figs ) ............................................................................8 7(6) Head trapezoidal, as broad as long; apex of scape distinctly surpassed posterior head corner ( Fig. 43 View Figs ); in profile view, anterodorsal corner of propodeal dorsum narrowly rounded ( Fig. 44 View Figs ) ( New Caledonia) ...... L. caledonica André, 1889 View in CoL

- Head rectangular, longer than broad; apex of scape failed to reach posterior head corner ( Fig. 45 View Figs ); in profile view, anterodorsal corner of propodeal dorsum acutely toothed ( Fig. 46 View Figs );(New Guinea)......... L. infundibuli Donisthorpe, 1940 View in CoL

8(6) Antennal scrobes deep, with clearly defined inner and outer margins ( Fig. 47 View Figs ); in profile view, top of petiolar node rightly angled with an acute summit ( Fig. 40 View Figs ).................................................9

- Antennal scrobes shallow, at least without clearly defined inner and outer margins ( Figs. 48-49 View Figs ); in profile view, top of petiolar node rightly prominent or narrowly rounded, but always with a blunt summit ( Figs. 41-42 View Figs )........................................10

9(8) In profile view, sides of head densely foveolate, propodeal spines straight, dorsum of postpetiole moderately convex, hairs on body dorsal dense and long ( Fig. 50 View Figs ); in dorsal view, propodeal spines straight ( Fig. 51 View Figs ) ( Philippines) .......... ........................................ L. diwata Taylor, 2012 View in CoL

- In profile view, sides of head longitudinally rugose, propodeal spines down-curved, dorsum of postpetiole strongly convex, hairs on body dorsal abundant and short ( Fig. 52 View Figs ); in dorsal view, propodeal spines in-curved ( Fig. 53 View Figs ) (New Guinea). ................................. L. cryptocera Emery, 1897 View in CoL

10(8) In profile view, top of petiolar node rightly prominent with very narrow summit, petiolar node roughly triangle and inclined forward ( Fig. 41 View Figs ) ....................................................................11

- In profile view, top of petiolar node narrowly rounded with broader summit, petiolar node roughly conical and erect ( Fig. 42 View Figs ) ..................16

11(10) In profile view, propodeal spines up-curved ( Fig. 54 View Figs )................................................12

- In profile view, propodeal spines straight ( Fig. 55 View Figs ) or down-curved..........................................13

12(11) Posterior head margin broad, almost straight ( Fig. 48 View Figs ); in profile view, propodeal spines long and weakly up-curved, body dorsum with dense hairs ( Fig. 56 View Figs ); in dorsal view, propodeal spines weakly out-curved ( Fig.57 View Figs ) ( Fiji) ..... ...................................... L. curvata Sarnat, 2006 View in CoL

- Posterior head margin narrow, weakly convex ( Fig. 58 View Figs ); in profile view, propodeal spines short and strongly up-curved, body dorsum with abundant hairs ( Fig. 59 View Figs ); in dorsal view, propodeal spines strongly out-curved ( Fig. 60 View Figs ) ( Fiji) ........... ...................................... L. stoneri ( Mann, 1925) View in CoL

13(11) In profile view, sides of head behind eyes archly rugose ( Figs. 61-62 View Figs ) ( Fiji)......................... .................................... L. tortuosa ( Mann, 1921) View in CoL

- In profile view, sides of head behind eyes smooth and shiny ( Fig. 63 View Figs ) ..............................14

14(13) In profile view, propodeal spines straight; postpetiole symmetrical, roundly convex ( Fig. 63 View Figs ), dorsum smooth and shiny ( Fig. 64 View Figs ); body color reddish brown ( Fiji) .................................... ..................................... L. desupra Sarnat, 2006 View in CoL

- In profile view, propodeal spines slightly curved posteriorly; postpetiole asymmetrical, with prominent anterodorsal corner dorsum rugose ( Figs. 65-66 View Figs ); body color black..................................15

15(14) Anterior margin of clypeus moderately convex ( Fig. 67 View Figs ); in profile view, sides of propodeum smooth and shiny; anterior margin of petiolar node almost vertical, forming an almost right angle with dorsum of peduncle ( Fig.68 View Figs ) ( Fiji) .... ........................................... L. vuda Sarnat, 2006 View in CoL

- Anterior margin of clypeus strongly convex ( Fig. 69 View Figs ); in profile view, sides of propodeum longitudinally rugose; anterior margin of petiolar node steeply sloping, forming a very blunt angle with dorsum of peduncle ( Fig. 70 View Figs ) ( Fiji) ............. ...................................... L. sukuna Sarnat, 2006 View in CoL

16(10) In full-face view, head weakly narrowing posteriorly with broader posterior margin ( Fig.71 View Figs ); in profile view, side of head behind eye smooth and shiny; propodeal spines pointing posteriorly; top of petiolar node broadly rounded; postpetiole erect ( Fig.72 View Figs ) ( Fiji) ............................ ........................................ L. polita ( Mann, 1921) View in CoL

- In full-face view, head strongly narrowing posteriorly with narrower posterior margin ( Fig.73 View Figs ); in profile view, side of head behind eye archly rugose; propodeal spines pointing posterodorsally; top of petiolar node narrowly rounded; postpetiole weakly inclined anteriorly ( Fig. 74 View Figs ) ( Fiji) ..... ................................... L. levifrons ( Mann, 1921) View in CoL

17(1) In profile view, top of petiolar node narrowly rounded or bluntly angled, with a blunt summit ( Figs. 75-80 View Figs ).....................................................18

- In profile view, top of petiolar node acutely or rightly angled, with a sharp, acute or very narrow summit ( Figs. 81-82 View Figs )........................................23

18(17) In profile view, propodeal spines very short, only slightly longer than propodeal lobes ( Figs. 75-78 View Figs ).....................................................19

- In profile view, propodeal spines very long, distinctly longer than propodeal lobes ( Figs. 79-80 View Figs ) ..........................................................................22

19(18) In full-face view, anterior margin of clypeus with a tiny tooth medially ( Fig. 9 View Figs ) .............20

- In full-face view, anterior margin of clypeus without a tiny tooth medially ( Fig.1 View Figs ) ...............21

20(19) In profile view, petiolar node roughly triangular, node dorsum blunt rounded ( Fig.75 View Figs ); in dorsal view, promesonotum irregularly rugose ( Fig. 17 View Figs ) ( Bhutan, China)..................................... .............. L. bhutanensis (Baroni Urbani, 1977) View in CoL

-In profile view, petiolar node roughly trapezoidal, node dorsum roundly convex( Fig. 76 View Figs ); in dorsal view, promesonotum longitudinally rugose ( Fig. 11 View Figs ) ( China) ....................... L. nima View in CoL sp. nov.

21(19) Posterior head margin broad and almost straight, antennal scrobes absent, head dorsum reticulate ( Fig. 83 View Figs ); in profile view, metanotal

groove absent, petiole node higher and roughly trapezoidal, body dorsum with dense hairs ( Fig. 77 View Figs ); dorsum of promesonotum smooth but punctate posteriorly ( Fig. 84 View Figs ) ( Solomon Islands) ........ ................................. L. epinotalis ( Mann, 1919) View in CoL

- Posterior head margin narrow and weakly convex, antennal scrobes distinctly impressed, head dorsum longitudinally rugose ( Fig. 85 View Figs ); in profile view, metanotal groove deeply notched, petiolar node lower and roughly conical, body dorsum with abundant hairs ( Fig. 78 View Figs ); dorsum of pronotum transversely rugose ( Fig.86 View Figs ) ( Australia, Lord Howe Island) ................... L. leae Wheeler, 1919 View in CoL

22(18) Posterior head margin narrow and slightly convex, antennal scrobes very shallow, head dorsum longitudinally rugose ( Fig. 87 View Figs ); in profile view, metanotal groove deeply impressed, petiolar node roughly conical and inclined anteriorly, body dorsum with abundant hairs; body color black ( Fig. 88 View Figs ) ( Fiji)..... L. rugosa ( Mann, 1921) View in CoL

- Posterior head margin broad and straight, antennal scrobes deep, head dorsum coarsely reticulate ( Fig. 89 View Figs ); in profile view, metanotal groove absent, petiolar node roughly trapezoidal and inclined posteriorly, body dorsum with dense hairs. Body color reddish brown ( Fig. 90 View Figs ) ( India)......... ...................................... L. lakshmi Taylor, 2012 View in CoL

23(17) Antennal scrobes absent or very shallow, without clear outer boundary ( Fig. 91 View Figs ) ............24

- Antennal scrobes present and deeply impressed, with clear outer boundary ( Fig.92 View Figs ) ..................26 24(23) In profile view, posterodorsal corner of mesonotum highly raised up and rightly angled, forming a step-like reduction between mesonotum and propodeum ( Figs. 93-94 View Figs ) (New Caledonia) ................................ L. roux i ( Emery, 1914)

- In profile view, posterodorsal corner of mesonotum at most very lowly raised up and narrowly rounded, not forming a step-like reduction between mesonotum and propodeum ( Fig. 95 View Figs ) ...25

25(24) Posterior head margin weakly convex, posterior corners broadly rounded ( Fig. 96 View Figs ); in profile view, promesonotum strongly convex and arched; propodeal spines up-curved; body dorsum with abundant hairs ( Fig. 97 View Figs ); in dorsal view, propodeal spines curved and pointed laterally ( Fig. 98 View Figs ); body color black ( Fiji) ......................... ........................ L. vanua Lucky & Sarnat, 2008 View in CoL

- Posterior head margin almost straight, posterior corners narrowly rounded ( Fig. 99 View Figs ); in profile view, dorsum of promesonotum almost straight; propodeal spines slightly down-curved ( Fig. 100 View Figs ); body dorsum with dense hairs; in dorsal view, propodeal spines curved medially and pointed lateroposteriorly ( Fig.101 View Figs ); body color reddish brown ( New Caledonia) .......................... ................................... L. sarasini ( Emery, 1914) View in CoL

26(23) In profile view, propodeal spines very short, approximately as long as propodeal lobes; petiolar node regularly triangular, as high as long, the top elongated and acutely angled, with straight anterior and posterior margins ( Fig. 102 View Figs ) ( Philippines)........... L. emarginata Taylor, 2012 View in CoL

- In profile view, propodeal spines long, distinctly longer than propodeal lobes; petiolar node roughly triangular, but lower than long, the top not elongated and rightly angled, at least posterior margin convex ( Fig. 103 View Figs ).................................27

27(26) In profile view, propodeal spines up-curved ( Fig.103 View Figs ) ( Australia) ................................ ........................... L. punctiventris Wheeler, 1919 View in CoL

- In profile view, propodeal spines down-curved or straight ( Figs. 104-105 View Figs ) ...............................28

28(27) Anterior 2/3 of head dorsum coarsely reticulate ( Fig.25 View Figs )................................................29

-Anterior 2/3 of head dorsum longitudinally rugose ( Fig. 26 View Figs ) ...................................................31

29(28) Posterior head margin narrow and moderately convex, with broadly rounded posterior corners ( Fig.106 View Figs ); in profile view, propodeal spines straight ( Fig.107 View Figs ) ( Philippines)............................ ...................................... L. idianale Taylor, 2012 View in CoL

- Posterior head margin broad and slightly convex, with narrowly rounded posterior corners ( Fig. 1 View Figs , 25 View Figs ); in profile view, propodeal spines weakly down-curved ( Fig.108 View Figs )........................30

30(29) Forecoxa delicately rugoreticulate, body color uniformly reddish brown ( Fig. 108 View Figs ); first gastral segment with shallow regular reticulating sculpture ( Fig. 109 View Figs ) (Borneo) .............................. ................... L. reticulata Lucky & Sarnat, 2008 View in CoL

- Forecoxae lateral side smooth and shiny ( Fig. 2 View Figs ), body bicolored, head, mesosoma, petiole, and postpetiole blackish brown, gaster reddish brown ( Figs. 1-3 View Figs ); first gastral segment smooth and shiny, with sparse piliferous small punctures ( Fig.110 View Figs ); ( China: Yunnan) ..... L. jingpo View in CoL sp. nov.

31(28) In profile view, metanotal groove narrowly shallowly notched( Fig. 111 View Figs ); first gastral segment strongly reticulate-rugose ( Fig. 112 View Figs ); body color black ( India)................................................ .............................. L. taylori Bharti & Ali, 2013 View in CoL

- In profile view, metanotal groove widely deeply impressed ( Fig. 113 View Figs ); first gastral segment smooth and shiny, at most with sparse piliferous punctures ( Fig. 114 View Figs ); body color reddish brown to blackish brown .................................................32

32(31) Dorsum of pronotum smooth and shiny, at most with sparse piliferous punctures ( Figs. 115- 116 View Figs ) ..................................................................33

- Dorsum of pronotum densely reticulate ( Figs.117-118 View Figs ) ..................................................34

33(32) Head dorsum sparsely longitudinally rugose ( Fig. 119 View Figs ); in profile view, propodeal dorsum weakly convex, propodeal spines weakly down-curved ( Fig. 120 View Figs ); in dorsal view, propodeal spines weakly divergent posteriorly ( Fig. 121 View Figs ); body color reddish brown ( Philippines) .............. ...................................... L. limatula Taylor, 2012 View in CoL

- Head dorsum densely longitudinally rugose ( Fig. 122 View Figs ); in profile view, propodeal dorsum weakly concave, propodeal spines straight ( Fig. 123 View Figs ); in dorsal view, propodeal spines strongly divergent posteriorly ( Fig. 124 View Figs ); body color blackish brown ( Fiji)............................................ ................................... L. striatella ( Mann, 1921) View in CoL

34(32) In profile view, petiolar node erect with straight anterior margin ( Fig.125 View Figs ); first gastral segment abundantly punctate ( Fig. 126 View Figs ); body dorsum with dense straight hairs and pubescence; body color generally medium reddish brown (Japan) ......................... L. azumai (Santschi, 1941) View in CoL

-In profile view, petiolar node inclined anteriorly with weakly concave anterior margin ( Fig. 127 View Figs ); first gastral segment smooth and shiny ( Fig. 128 View Figs ). Body dorsum with dense curved hairs and pubescence; body bicolor, head, mesosoma, petiole and postpetiole reddish brown, gaster black (Vietnam) ............................... L. hmong Taylor, 2012 View in CoL