Key to Lordomyrma species

This key to species of Lordomyrma, the first for the genus, is based on Liu, Xu & Hita Garcia (2021).

1

 * In full-face view, from center of frons to posterior margin of head smooth and shining (Fig. 24)
 * In full-face view, from center of frons to posterior margin of head coarsely rugose or reticulate (Figs. 25-26)

2

 * Promesonotum strongly convex and subglobose (Fig. 27); propodeal spines very long, equal to or longer than propodeal dorsum, strongly diverging and out-curved (Fig. 28)
 * Promesonotum not so strongly convex as above(Fig. 29); propodeal spines shorter than propodeal dorsum, straight or curved, not so strongly diverging and out-curved (Fig. 30)

3

 * In profile view, apex of propodeal spine upcurved; top of postpetiole with short acute spine (Fig. 31) (New Guinea) Lordomyrma crawleyi
 * In profile view, apex of propodeal spine straight; top of postpetiole rightly angled, without acute spine (Fig.32) (New Guinea, New Caledonia) Lordomyrma furcifera

4

 * In profile view, metanotal groove absent (Fig. 33)
 * In profile view, metanotal groove distinctly impressed (Fig. 34)

5

 * Head square, as broad as long (Fig. 35); sides of head longitudinally striate; in profile view, top of postpetiole bluntly angled (Fig. 36) (New Guinea) Lordomyrma nigra
 * Head rectangular, distinctly longer than broad (Fig. 37); sides of head smooth; in profile view, top of postpetiole roundly convex (Fig. 38) (New Guinea) Lordomyrma acuminata

6

 * In profile view, top of petiolar node with a sharp spine (Fig. 39)
 * In profile view, top of petiolar node without a sharp spine, at most acutely angled (Figs. 40-42)

7

 * Head trapezoidal, as broad as long; apex of scape distinctly surpassed posterior head corner (Fig. 43); in profile view, anterodorsal corner of propodeal dorsum narrowly rounded (Fig. 44) (New Caledonia) Lordomyrma caledonica
 * Head rectangular, longer than broad; apex of scape failed to reach posterior head corner (Fig. 45); in profile view, anterodorsal corner of propodeal dorsum acutely toothed (Fig. 46);(New Guinea) Lordomyrma infundibuli

8

 * Antennal scrobes deep, with clearly defined inner and outer margins (Fig. 47); in profile view, top of petiolar node rightly angled with an acute summit (Fig. 40)
 * Antennal scrobes shallow, at least without clearly defined inner and outer margins (Figs. 48-49); in profile view, top of petiolar node rightly prominent or narrowly rounded, but always with a blunt summit (Figs. 41-42)

9

 * 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); in dorsal view, propodeal spines straight (Fig. 51) (Philippines) Lordomyrma diwata
 * 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); in dorsal view, propodeal spines in-curved (Fig. 53) (New Guinea) Lordomyrma cryptocera

10

 * In profile view, top of petiolar node rightly prominent with very narrow summit, petiolar node roughly triangle and inclined forward (Fig. 41)
 * In profile view, top of petiolar node narrowly rounded with broader summit, petiolar node roughly conical and erect (Fig. 42)

11

 * In profile view, propodeal spines upcurved (Fig. 54)
 * In profile view, propodeal spines straight (Fig. 55) or down-curved

12

 * Posterior head margin broad, almost straight (Fig. 48); in profile view, propodeal spines long and weakly up-curved, body dorsum with dense hairs (Fig. 56); in dorsal view, propodeal spines weakly out-curved (Fig.57) (Fiji) Lordomyrma curvata
 * Posterior head margin narrow, weakly convex (Fig. 58); in profile view, propodeal spines short and strongly up-curved, body dorsum with abundant hairs (Fig. 59); in dorsal view, propodeal spines strongly out-curved (Fig. 60) (Fiji) Lordomyrma stoneri

13

 * In profile view, sides of head behind eyes archly rugose (Figs. 61-62) (Fiji) Lordomyrma tortuosa
 * In profile view, sides of head behind eyes smooth and shiny (Fig. 63)

14

 * In profile view, propodeal spines straight; postpetiole symmetrical, roundly convex (Fig. 63), dorsum smooth and shiny (Fig. 64); body color reddish brown (Fiji) Lordomyrma desupra
 * In profile view, propodeal spines slightly curved posteriorly; postpetiole asymmetrical, with prominent anterodorsal corner dorsum rugose (Figs. 65-66); body color black

15

 * Anterior margin of clypeus moderately convex (Fig. 67); 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) (Fiji) Lordomyrma vuda
 * Anterior margin of clypeus strongly convex (Fig. 69); 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) (Fiji) Lordomyrma sukuna

16

 * In full-face view, head weakly narrowing posteriorly with broader posterior margin (Fig.71); 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) (Fiji) Lordomyrma polita
 * In full-face view, head strongly narrowing posteriorly with narrower posterior margin (Fig.73); 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) (Fiji) Lordomyrma levifrons

17

 * In profile view, top of petiolar node narrowly rounded or bluntly angled, with a blunt summit (Figs. 75-80)
 * In profile view, top of petiolar node acutely or rightly angled, with a sharp, acute or very narrow summit (Figs. 81-82)

18

 * In profile view, propodeal spines very short, only slightly longer than propodeal lobes (Figs. 75-78)
 * In profile view, propodeal spines very long, distinctly longer than propodeal lobes (Figs. 79-80)

19

 * In full-face view, anterior margin of clypeus with a tiny tooth medially (Fig. 9)
 * In full-face view, anterior margin of clypeus without a tiny tooth medially (Fig. 1)

20

 * In profile view, petiolar node roughly triangular, node dorsum blunt rounded (Fig.75); in dorsal view, promesonotum irregularly rugose (Fig. 17) (Bhutan, China) Lordomyrma bhutanensis
 * In profile view, petiolar node roughly trapezoidal, node dorsum roundly convex(Fig. 76); in dorsal view, promesonotum longitudinally rugose (Fig. 11) (China) Lordomyrma nima

21

 * Posterior head margin broad and almost straight, antennal scrobes absent, head dorsum reticulate (Fig. 83); in profile view, metanotal groove absent, petiole node higher and roughly trapezoidal, body dorsum with dense hairs (Fig. 77); dorsum of promesonotum smooth but punctate posteriorly (Fig. 84) (Solomon Islands) Lordomyrma epinotalis
 * Posterior head margin narrow and weakly convex, antennal scrobes distinctly impressed, head dorsum longitudinally rugose (Fig. 85); in profile view, metanotal groove deeply notched, petiolar node lower and roughly conical, body dorsum with abundant hairs (Fig. 78); dorsum of pronotum transversely rugose (Fig.86) (Australia, Lord Howe Island) Lordomyrma leae

22

 * Posterior head margin narrow and slightly convex, antennal scrobes very shallow, head dorsum longitudinally rugose (Fig. 87); in profile view, metanotal groove deeply impressed, petiolar node roughly conical and inclined anteriorly, body dorsum with abundant hairs; body color black (Fig. 88) (Fiji) Lordomyrma rugosa
 * Posterior head margin broad and straight, antennal scrobes deep, head dorsum coarsely reticulate (Fig. 89); in profile view, metanotal groove absent, petiolar node roughly trapezoidal and inclined posteriorly, body dorsum with dense hairs. Body color reddish brown (Fig. 90) (India) Lordomyrma lakshmi

23

 * Antennal scrobes absent or very shallow, without clear outer boundary (Fig. 91)
 * Antennal scrobes present and deeply impressed, with clear outer boundary (Fig.92)

24

 * 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) (New Caledonia) Lordomyrma rouxi
 * 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)

25

 * Posterior head margin weakly convex, posterior corners broadly rounded (Fig. 96); in profile view, promesonotum strongly convex and arched; propodeal spines up-curved; body dorsum with abundant hairs (Fig. 97); in dorsal view, propodeal spines curved and pointed laterally (Fig. 98); body color black (Fiji) Lordomyrma vanua
 * Posterior head margin almost straight, posterior corners narrowly rounded (Fig. 99); in profile view, dorsum of promesonotum almost straight; propodeal spines slightly down-curved (Fig. 100); body dorsum with dense hairs; in dorsal view, propodeal spines curved medially and pointed lateroposteriorly (Fig. 101); body color reddish brown (New Caledonia) Lordomyrma sarasini

26

 * 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) (Philippines) Lordomyrma emarginata
 * 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)

27

 * In profile view, propodeal spines upcurved (Fig. 103) (Australia) Lordomyrma punctiventris
 * In profile view, propodeal spines down-curved or straight (Figs. 104-105)

28

 * Anterior 2/3 of head dorsum coarsely reticulate (Fig. 25)
 * Anterior 2/3 of head dorsum longitudinally rugose (Fig. 26)

29

 * Posterior head margin narrow and moderately convex, with broadly rounded posterior corners (Fig. 106); in profile view, propodeal spines straight (Fig. 107) (Philippines) Lordomyrma idianale
 * Posterior head margin broad and slightly convex, with narrowly rounded posterior corners (Fig. 1, 25); in profile view, propodeal spines weakly down-curved (Fig. 108)

30

 * Forecoxa delicately rugoreticulate, body color uniformly reddish brown (Fig. 108); first gastral segment with shallow regular reticulating sculpture (Fig. 109) (Borneo) Lordomyrma reticulata
 * Forecoxae lateral side smooth and shiny (Fig. 2), body bicolored, head, mesosoma, petiole, and postpetiole blackish brown, gaster reddish brown (Figs. 1-3); first gastral segment smooth and shiny, with sparse piliferous small punctures (Fig. 110); (China: Yunnan) Lordomyrma jingpo

31

 * In profile view, metanotal groove narrowly shallowly notched(Fig. 111); first gastral segment strongly reticulate-rugose (Fig. 112); body color black (India) Lordomyrma taylori
 * In profile view, metanotal groove widely deeply impressed (Fig. 113); first gastral segment smooth and shiny, at most with sparse piliferous punctures (Fig. 114); body color reddish brown to blackish brown

32

 * Dorsum of pronotum smooth and shiny, at most with sparse piliferous punctures (Figs. 115-116)
 * Dorsum of pronotum densely reticulate (Figs.117-118)

33

 * Head dorsum sparsely longitudinally rugose (Fig. 119); in profile view, propodeal dorsum weakly convex, propodeal spines weakly down-curved (Fig. 120); in dorsal view, propodeal spines weakly divergent posteriorly (Fig. 121); body color reddish brown (Philippines) Lordomyrma limatula
 * Head dorsum densely longitudinally rugose (Fig. 122); in profile view, propodeal dorsum weakly concave, propodeal spines straight (Fig. 123); in dorsal view, propodeal spines strongly divergent posteriorly (Fig. 124); body color blackish brown (Fiji) Lordomyrma striatella

34

 * In profile view, petiolar node erect with straight anterior margin (Fig. 125); first gastral segment abundantly punctate (Fig. 126); body dorsum with dense straight hairs and pubescence; body color generally medium reddish brown (Japan) Lordomyrma azumai
 * In profile view, petiolar node inclined anteriorly with weakly concave anterior margin (Fig. 127); first gastral segment smooth and shiny (Fig. 128). Body dorsum with dense curved hairs and pubescence; body bicolor, head, mesosoma, petiole and postpetiole reddish brown, gaster black (Vietnam) Lordomyrma hmong