Key to Pheidole majors and minors of Borneo

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This worker key is based on: Eguchi, K. 2001a. A revision of the Bornean species of the ant genus Pheidole (Insecta: Hymenoptera: Formicidae: Myrmicinae). Tropics Monograph Series. 2:1-154. PDF

This key is designed to be used with samples that include both the major and minor workers from the same colony.

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1

  • Antenna with 5-segmented club, or without conspicuous club . . . . . 2

2

return to couplet #1

  • Apical five antennal segments distinctly elongate and forming conspicuous club in both the subcastes; posterior part of head never forming elongate neck in the minor; hypostoma of the major bearing three low median processes; low subpetiolar process present in the major . . . . . 3
  • Antenna lacking conspicuous club in both the subcastes; posterior part of head of the minor forming elongate neck; hypostoma of the major lacking distinct median processes; subpetiolar process absent in both the subcastes . . . . . 4

3

return to couplet #2

  • Head of the major in profile distinctly impressed on vertex; promesonotal dome of the minor relatively high; metanotal groove of the minor in profile indistinct . . . . . Pheidole quinata
Pheidole quinata.jpg
minor
Pheidole quinata casent0901624 p 1 high.jpg
  • Head of the major in profile not, or slightly, impressed on vertex; promesonotal dome of the minor relatively low; metanotal groove of the minor in profile distinct . . . . . Pheidole sabahna
Pheidole sabahna.jpg
major
Pheidole sabahna casent0281651 p 1 high.jpg
minor
Pheidole sabahna casent0282602 p 1 high.jpg

4

return to couplet #2

  • Propodeal spine more than 4 times as long as diameter of propodeal spiracle in the minor; body light brown to brown in both the subcastes . . . . . Pheidole montana
Pheidole montana.jpg
Pheidole montana casent0281649 h 1 high.jpg
Pheidole montana casent0281649 p 1 high.jpg
Pheidole montana casent0281650 h 1 high.jpg
Pheidole montana casent0281650 p 1 high.jpg
  • Propodeal spine 2-2.5 times as long as diameter of propodeal spiracle in the minor; body reddish brown to dark brown in both the subcastes . . . . . 5

5

return to couplet #4

  • Head of the major densely bearing standing hairs over the surface; lateral face of occipital lobe distinctly rugose in the major; in profile dorsum of promesonotal dome in front of the prominence on its posterior declivity bearing ca. 20 standing hairs in the major . . . . . Pheidole comata
Pheidole comata.jpg
major
Pheidole comata casent0281704 p 1 high.jpg
minor
Pheidole comata casent0281705 p 1 high.jpg
  • Head of the major with sparse standing hairs only on frons and vertex; lateral face of occipital lobe weakly and finely rugose, or almost smooth and shining in the major; in profile dorsum of promesonotal dome in front of the prominence on its posterior declivity bearing at most 10 standing hairs in the major . . . . . Pheidole longipes
Pheidole longipes.jpg
major
Pheidole longipes casent0281706 p 1 high.jpg
minor
Pheidole longipes casent0281707 p 1 high.jpg

6

return to couplet #1

  • Promesonotum armed with a pair of long and pointed spines in both the subcastes; hypostoma of the major always bearing a pair of stout median processes . . . . . 7
  • Promesonotum unarmed in both the subcastes, or armed with a pair of processes, but the processes never developing into long and pointed spines (the processes of the minor of P. aristotelis well developed, but truncate or blunt apically in the minor); hypostoma of the major bearing 0-3 median processes . . . . . 11

7

return to couplet #6

  • Propodeal spine digitiform and blunt apically in the major, and elongate-triangular, ca. 1.5 times as long as diameter of propodeal spiracle in the minor; head of the minor smooth and shining . . . . . Pheidole quadricuspis
Pheidole quadricuspis.jpg
major
Pheidole quadricuspis casent0905766 p 1 high.jpg
minor
Pheidole quadricuspis casent0281629 p 1 high.jpg
  • Propodeal spine usually pointed apically in the major, and horn-like, more than 4 times as long as diameter of propodeal spiracle in the minor; head of the minor usually sculptured at least partly (in P. acantha head of the minor sometimes almost completely smooth and shining) . . . . . 8

8

return to couplet #7

  • Gaster of the major smooth and shining over the surface, or only anterior part of first gastral tergite around its articulation with postpetiole weakly punctured; petiolar node of both the subcastes in profile acute at apex; dorsum of alitrunk in profile bearing only less than 10 standing hairs in the minor . . . . . Pheidole acantha
Pheidole acantha.jpg
major
Pheidole acantha casent0901619 p 1 high.jpg
minor
Pheidole acantha casent0901618 p 1 high.jpg
  • At least first gastral tergite of the major punctured and dull; petiolar node of both the subcastes in profile blunt at apex; dorsum of alitrunk in profile usually bearing more than 20 standing hairs in the minor . . . . . 9

9

return to couplet #8

  • Head punctured, or largely smooth and shining but partly punctured in the minor . . . . . Pheidole spinicornis
Pheidole spinicornis.jpg
major
Pheidole spinicornis casent0901621 p 1 high.jpg
minor
Pheidole spinicornis casent0901620 p 1 high.jpg

10

return to couplet #9

  • Propodeal spine elongate-triangular, with broad base in the major, and horn-like, usually directed upward in the minor; petiole of the major with low subpetiolar process; body smaller (e.g., HW: 1.90-2.28 mm in the major, 0.67-0.78 mm in the minor) . . . . . Pheidole quadrensis
Pheidole quadrensis.jpg
major
Pheidole quadrensis casent0281630 p 1 high.jpg
minor
Pheidole quadrensis casent0281631 p 1 high.jpg
  • Propodeal spine horn-like, with narrow base in the major, and horn-like, directed posterodorsally in the minor; petiole of the major without any subpetiolar process; body larger (e.g., HW: 2.79-2.91 mm in the major, 1.04-1.11 mm in the minor) . . . . . Pheidole lokitae
Pheidole lokitae.jpg
major
Pheidole lokitae casent0281702 p 1 high.jpg
minor
Pheidole lokitae casent0281703 p 1 high.jpg

11

return to couplet #6

  • Legs from apex of femur to apex of tersus ivory-white contrasted with remainder of femur which is dark brown . . . . . Pheidole fantasia
Pheidole fantasia.jpg
major
MCZ-ENT00031796 Pheidole fantasia hal.jpg
minor
Pheidole-fantasiaLm8x.jpg

12

return to couplet #11

  • Frontal lobe extremely developed, extending beyond anterior margin of c1ypeus in the major . . . . . Pheidole upeneci
Pheidole upeneci.jpg
major
Pheidole upeneci casent0281684 p 1 high.jpg
minor
Pheidole upeneci casent0907774 p 1 high.jpg
  • Frontal lobe sometimes developed, but never extending beyond anterior margin of c1ypeus in the major . . . . . 13

13

return to couplet #12

  • Eye consisting of 5-7 ommatidia in both the subcastes; terminal antennal segment more than 1.6 times as long as preceding two segments together in both the subcastes . . . . . Pheidole parvicorpus
Pheidole parvicorpus.jpg
major
Pheidole parvicorpus casent0281687 p 1 high.jpg
minor
Pheidole parvicorpus casent0281688 p 1 high.jpg
  • Eye consisting of at least ten, usually more than 15, ommatidia in both the subcastes; terminal antennal segment at most 1.3 times as long as preceding two segments together in both the subcastes . . . . . 14

14

return to couplet #13

  • Frons irregularly reticulate; hypostoma bearing a stout median process in the major rarely the process is poorly developed); frontal carina horizontal, extensively overhanging antennal scrobe in the major; each dorsolateral portion of promesonotal dome angulate outward in the major, and armed with a pair of blunt spines in the minor . . . . . Pheidole aristotelis
Pheidole aristotelis.jpg
major
Pheidole aristotelis casent0219465 p 1 high.jpg
minor
Pheidole aristotelis casent0282388 p 1 high.jpg
  • Frons of the major longitudinally rugose; hypostoma bearing 0-3 median processes in the minor condition of frontal carina and antennal scrobe variable in the major; each dorsolateral portion of promesonotal dome sometimes produced outward in the major, and sometimes armed with a pair of low tubercles in the minor (but the tubercles never developed into distinct spines as seen in P. aristotelis) . . . . . 15

15

return to couplet #14

  • Masticatory margin of mandible of the major having two denticles in front of basal angle; ventral faces of midcoxa and hindcoxa of the major distinctly reticulate (this condition exclusively shared with P. aristotelis among others) . . . . . 16
  • Masticatory margin of mandible of the major having at most a denticle in front of basal angle; ventral faces of midcoxa and hindcoxa of the major completely smooth and shining . . . . . 20

16

return to couplet #15

  • Head above subocular level and alitrunk punctured and dull in the minor . . . . . 17
  • Head and alitrunk smooth and shining in the minor . . . . . 18

17

return to couplet #16

  • Outer face of mandible of the major sculptured with rugulae running from its base toward its masticatory margin . . . . . Pheidole rugifera
Pheidole rugifera.jpg
major
Pheidole rugifera casent0901653 p 1 high.jpg
minor
Pheidole rugifera casent0901652 p 1 high.jpg
  • Outer face of mandible of the major rugose laterally only around at most its base . . . . . Pheidole tenebricosa
Pheidole tenebricosa.jpg
major
Pheidole tenebricosa casent0901659 p 1 high.jpg
minor
Pheidole tenebricosa casent0901658 p 1 high.jpg

18

return to couplet #16

Pheidole kikutai.jpg
major
Pheidole kikutai casent0901649 p 1 high.jpg
minor
Pheidole kikutai casent0901648 p 1 high.jpg
  • Occipital carina of the minor absent dorsally on head . . . . . 19

19

return to couplet #18

Pheidole clypeocornis.jpg
major
Pheidole clypeocornis casent0281682 p 1 high.jpg
minor
Pheidole-clypeocornismL10.jpg
  • Lateral portion of clypeus never produced into a horn in the major . . . . . Pheidole hortensis
Pheidole hortensis.jpg
major
Pheidole hortensis casent0179654 p 1 high.jpg
minor
Pheidole hortensis casent0179655 p 1 high.jpg

20

return to couplet #15

  • In the major frontal carina horizontal, overhanging antennal scrobe; hypostoma of the major always bearing a large median process; head of the minor always rugoso-reticulate or punctured . . . . . 21
  • In the major frontal carina sometimes well developed, but not overhanging antennal scrobe extensively; hypostoma of the major bearing 0-3 median processes; head of the minor smooth and shining, or sculptured . . . . . 23

21

return to couplet #20

  • Head weakly rugoso-reticulate and lateral face of alitrunk weakly punctured in the minor; c1ypeus of the major having a distinct median longitudinal carina . . . . . Pheidole retivertex
Pheidole retivertex.jpg
major
Pheidole retivertex casent0179656 p 1 high.jpg
minor
Pheidole retivertex casent0901650 p 1 high.jpg
  • Head and alitrunk distinctly punctured or reticulate in the minor; c1ypeus of the major lacking a median longitudinal carina . . . . . 22

22

return to couplet #21

  • Head and alitrunk of the minor punctured; frontal lobe of the major well developed and suberect . . . . . Pheidole tjibodana
Pheidole tjibodana.jpg
major
Pheidole tjibodana casent0281725 p 1 high.jpg
minor
Pheidole tjibodana casent0904241 p 1 high.jpg
  • Head and alitrunk of the minor reticulate; frontal lobe of the major poorly developed . . . . . Pheidole sayapensis
Pheidole sayapensis.jpg
major
Pheidole sayapensis casent0901655 p 1 high.jpg
minor
Pheidole sayapensis casent0901654 p 1 high.jpg

23

return to couplet #20

  • Each dorsolateral portion of promesonotum produced as a blunt horn directed dorsolaterally in the major; eye of the major small (distance between mandibular insertion and anterior margin of eye 2.1-2.6 times as long as maximal diameter of eye; postpetiole broad in the major (2.3-2.8 times as broad as petiolar node) . . . . . Pheidole angulicollis
Pheidole angulicollis.jpg
major
Pheidole angulicollis casent0281626 p 1 high.jpg
minor
Pheidole angulicollis casent0901622 p 1 high.jpg
  • Each dorsolateral portion of promesonotum sometimes produced laterally but not forming a blunt horn directed dorsolaterally in the major; eye of the major variable in size (distance between mandibular insertion and anterior margin of eye usually less than twice as long as maximal diameter of eye); postpetiole variable in width in the major (usually less than 2.3 times as broad as petiolar node) . . . . . 24

24

return to couplet #23

  • Petiolar node in profile highly elevated in both the subcastes; hypostoma of the major always bearing a pair of median processes (occasionally the processes poorly developed in P. elisae Emery); mesopleuron of both the subcastes divided into two parts, of which lower part is usually margined dorsally; head and promesonotum always smooth and shining in the minor . . . . . 25
  • Petiolar node in profile usually relatively low in both the subcastes (with exceptions as seen in the minor of P. gombakensis sp. nov.; hypostoma bearing 0-3 median processes (the major of P. gombakensis having a pair of median processes on hypostoma where the processes, however, extremely developed; if mesopleuron is divided into two parts, the lower part is usually not margined dorsally; head and promesonotum smooth and shining, or sculptured in the minor . . . . . 27

25

return to couplet #24

  • Dorsum of head entirely longitudinally rugose up to posterior extremity of occipital lobe in the major . . . . . Pheidole sauberi
Pheidole sauberi.jpg
major
Pheidole sauberi casent0219512 p 1 high.jpg
minor
Pheidole sauberi casent0282609 p 1 high.jpg


  • Dorsum of occipital lobe smooth and shining in the major . . . . . 26

26

return to couplet #25

  • Longest axis of eye having 8 ommatidia in the major, and 6-7 ommatidia in the minor . . . . . Pheidole elisae
Pheidole elisae.jpg
major
Pheidole elisae casent0281689 p 1 high.jpg
minor
Pheidole elisae casent0282611 p 1 high.jpg
  • Longest axis of eye having 4-5 ommatidia in the major, and 4 ommatidia in the minor . . . . . Pheidole sarawakana
Pheidole sarawakana.jpg
major
Pheidole-sarawakanaL4.jpg
minor
Pheidole sarawakana casent0281717 p 1 high.jpg

27

return to couplet #24

  • Alitrunk of both the subcastes completely lacking standing hairs . . . . . Pheidole huberi
Pheidole huberi.jpg
major
Pheidole huberi casent0281710 p 1 high.jpg
minor
Pheidole huberi casent0281711 p 1 high.jpg
  • Alitrunk of both the subcastes bearing standing hairs . . . . . 28

28

return to couplet #27

  • Propodeal spine extremely long, extending over petiolar node in both the subcastes . . . . . Pheidole modiglianii
Pheidole modiglianii.jpg
major
Pheidole modiglianii casent0281712 p 1 high.jpg
minor
Pheidole modiglianii casent0281713 p 1 high.jpg
  • Propodeal spine extending at most slightly beyond posterior end of propodeal lobe in both the subcastes . . . . . 29

29

return to couplet #28

  • Dorsum of occipital lobe of the major smooth and shining (or only weakly and very sparsely rugose in P. manukana where postpetiole of the major 2.4-2.6 times as broad as petiolar node) . . . . . 30
  • Dorsum of head of the major sculptured (or rugulae on occipital lobe weak in P. jacobsoni where, however, postpetiole of the major 1.6-1.7 times as broad as petiolar node) . . . . . 36

30

return to couplet #29

  • Hypostoma of the major always lacking median processes; petiole of both the subcastes less than 1.2 times as long as postpetiole . . . . . 31
  • Hypostoma of the major bearing 1-3 median processes (in some specimens of P. lucioccipitalis median processes sometimes almost absent where petiole is more than 1.5 times as long as post petiole in both the subcastes) . . . . . 33

31

return to couplet #30

  • Distance between mandibular insertion and anterior margin of eye 2.3-2.4 times as long as maximal diameter of eye in the major, and ca. 1.5 times in the minor . . . . . Pheidole havilandi
Pheidole havilandi.jpg
major
Pheidole havilandi casent0281718 p 1 high.jpg
minor
Pheidole havilandi casent0281719 p 1 high.jpg
  • Distance between mandibular insertion and anterior margin of eye 1.4-1.5 times as long as maximal diameter of eye in the major, and 1.0-1.1 times in the minor . . . . . 32

32

return to couplet #31

  • Postpetiole 2.4-2.6 times as broad as petiolar node in the major; frontal carina of the major conspicuous . . . . . Pheidole manukana
Pheidole manukana.jpg
major
Pheidole manukana casent0901633 p 1 high.jpg
minor
Pheidole manukana casent0901632 p 1 high.jpg
  • Postpetiole 1.8-1.9 times as broad as petiolar node in the major; frontal carina of the major inconspicuous . . . . . Pheidole megacephala
major
Pheidole megacephala iccdrs0003685 profile 1.jpg
minor
Pheidole megacephala casent0059654 profile 1.jpg

33

return to couplet #30

  • Posterior declivity of promesonotal dome having a distinct prominence in both the subcastes; promesonotal dome of the minor having a pair of low tubercles . . . . . Pheidole plinii
Pheidole plinii.jpg
major
Pheidole plinii casent0281663 p 1 high.jpg
minor
Pheidole plinii casent0281664 p 1 high.jpg
  • Posterior declivity of promesonotal dome lacking a distinct prominence in both the subcastes; promesonotal dome of the minor unarmed . . . . . 34

34

return to couplet #33

  • Hypostoma of the major bearing an indistinct median process, or lacking median processes; clypeus of the major having a median longitudinal carina . . . . . Pheidole lucioccipitalis
Pheidole lucioccipitalis.jpg
major
Pheidole lucioccipitalis casent0901645 p 1 high.jpg
minor
Pheidole lucioccipitalis casent0901644 p 1 high.jpg
  • Hypostoma of the major bearing 2-3 median processes; clypeus of the major lacking a median longitudinal carina . . . . . 35

35

return to couplet #34

  • Promesonotum of the major narrower dorsally than ventrally; propodeal spine of the minor 3.5-4 times as long as diameter of propodeal spiracle . . . . . Pheidole deltea
Pheidole deltea.jpg
major
Pheidole deltea casent0901641 p 1 high.jpg
minor
  • Promesonotum of the major broader dorsally than ventrally; propodeal spine of the minor twice as long as diameter of propodeal spiracle . . . . . Pheidole merimbun
Pheidole merimbun.jpg
major
Pheidole merimbun casent0901635 p 1 high.jpg
minor
Pheidole merimbun casent0901634 p 1 high.jpg

36

return to couplet #29

  • Posterior declivity of promesonotal dome of the major lacking a distinct prominence; if the declivity has an inconspicuous prominence (e.g., P. poringensis), hypostoma of the major bears 2-3 distinct median processes . . . . . 37
  • Posterior declivity of promesonotal dome of the major having a distinct prominence; if the declivity has just a small prominence as seen in P. submonticola, hypostoma of the major completely lacks median processes . . . . . 43

37

return to couplet #36

38

return to couplet #37

  • Promesonotal dome of the minor in profile very low and almost flat dorsally; in full-face view posterior margin of head of the major weakly concave . . . . . Pheidole planidorsum
Pheidole planidorsum.jpg
major
Pheidole planidorsum casent0901639 p 1 high.jpg
minor
Pheidole planidorsum casent0901638 p 1 high.jpg
  • Promesonotal dome of the minor in profile relatively convex dorsally; in full-face view posterior margin of head of the major usually distinctly concave . . . . . 39

39

return to couplet #38

  • Hypostoma of the major with a pair of very large median processes; dorsum of head of the minor rugoso-reticulate . . . . . Pheidole gombakensis
Pheidole gombakensis.jpg
  • Hypostoma of the major with 2-3 median processes; if two processes are present, they are much smaller than those of P. gombakensis; head of the minor largely smooth and shining . . . . . 40

40

return to couplet #39

Pheidole tawauensis.jpg
major
Pheidole tawauensis casent0901657 p 1 high.jpg
minor
Pheidole tawauensis casent0901656 p 1 high.jpg
Pheidole butteli.jpg
major
Pheidole butteli casent0907864 p 1 high.jpg
minor
Pheidole butteli casent0907865 p 1 high.jpg

41

return to couplet #37

  • Outer face of mandible of the major bearing long decumbent hairs; head of the minor reticulate . . . . . Pheidole poringensis
Pheidole poringensis.jpg
minor
Pheidole poringensis casent0901660 p 1 high.jpg
  • Outer face of mandible of the major sparsely bearing short appressed hairs; head of the minor punctured . . . . . 42

42

return to couplet #41

  • Distance between mandibular insertion and anterior margin of eye twice as long as maximal diameter of eye in the major; hypostoma of the major bearing three median processes, of which medianmost one is poorly developed . . . . . Pheidole rabo
Pheidole rabo.jpg
major
Pheidole rabo casent0907989 p 1 high.jpg
minor
Pheidole rabo casent0907990 p 1 high.jpg
  • Distance between mandibular insertion and anterior margin of eye ca. 1.4 times as long as maximal diameter of eye in the major; hypostoma of the major bearing three similar-sized median processes . . . . . Pheidole parva
major
Pheidole parva casent0055997 p 1 high.jpg
minor
Pheidole parva casent0160279 p 1 high.jpg

43

return to couplet #36

  • Hypostoma of the major bearing three low median processes, of which each lateral one is partly connected to the process just mesal to mandibular insertion . . . . . Pheidole annexa
Pheidole annexa.jpg
major
Pheidole annexa casent0901627 p 1 high.jpg
minor
Pheidole annexa casent0901626 p 1 high.jpg
  • If hypostoma of the major bears 2-3 median processes, each lateral one is never connected to the process just mesal to mandibular insertion . . . . . 44

44

return to couplet #43

  • Hypostoma of the major bearing a pair of stout median processes; petiole of the major almost as long as postpetiole; promesonotum with a pair of low tubercles in the minor. . . . . Pheidole ghigii
Pheidole ghigii.jpg
major
Pheidole ghigii casent0904268 p 1 high.jpg
minor
Pheidole ghigii casent0281729 p 1 high.jpg
  • If hypostoma of the major bears a pair of small or indistinct median processes, petiole of the major is at least 1.2 times as long as postpetiole; promesonotum without a pair of low tubercles in the minor . . . . . 45

45

return to couplet #44

  • Propodeal spine of the major elongate-triangular, with broad base . . . . . 46
  • Propodeal spine of the major horn-like, with narrow base . . . . . 47

46

return to couplet #45

  • Antennal scrobe margined below with a conspicuous carina in the major anteriorly; mesopleuron of the major without a distinct transverse impression; posterior declivity of promesonotal dome of the minor with a low prominence . . . . . Pheidole cariniceps
Pheidole cariniceps.jpg
major
Pheidole cariniceps casent0281658 p 1 high.jpg
minor
Pheidole cariniceps casent0281659 p 1 high.jpg
  • Antennal scrobe present only around antennal insertion, and never margined below with a conspicuous carina in the major; mesopleuron of the major divided by a transverse impression into two parts, of which the lower part is margined dorsally; posterior declivity of promesonotal dome of the minor without any prominence . . . . . Pheidole submonticola
Pheidole submonticola.jpg
minor
Pheidole submonticola casent0179657 p 1 high.jpg

47

return to couplet #45

  • Posteriormost part of dorsum of occipital lobe of the major almost transversely rugose in the major . . . . . Pheidole plagiaria
Pheidole plagiaria.jpg
major
Pheidole plagiaria casent0281714 p 1 high.jpg
minor
Pheidole plagiaria casent0281715 p 1 high.jpg
  • Posteriormost part of dorsum of occipital lobe reticulate, rugoso-reticulate or longitudinally rugose, but never transversely rugose in the major . . . . . 48

48

return to couplet #47

  • Frontal carina of the major slight; lateral face of occipital lobe of the major smooth or very weakly rugoso-punctured . . . . . Pheidole jacobsoni
major
Pheidole jacobsoni casent0907909 p 1 high.jpg
minor
Pheidole jacobsoni casent0284075 p 1 high.jpg
  • Frontal carina of the major distinct; lateral face of occipital lobe of the major rugoso-reticulate . . . . . 49

49

return to couplet #48

  • Posterior margin of head of the major strongly concave; occipital carina of the minor forming a flange, which is narrowed at its base in full-face view . . . . . Pheidole aglae
Pheidole aglae.jpg
major
Pheidole aglae casent0281668 p 1 high.jpg
minor
Pheidole aglae casent0281669 p 1 high.jpg
  • Posterior margin of head of the major weakly concave; occipital carina of the minor well developed, but never narrowed at its base in full-face view . . . . . 50

50

return to couplet #49

  • Distance between mandibular insertion and anterior margin of eye 1.3-1.4 times as long as maximal diameter of eye in the major . . . . . Pheidole fervens
Pheidole fervens.jpg
major
Pheidole fervens casent0008638 profile 1.jpg
minor
Pheidole fervens casent0005780 profile 1.jpg
  • Distance between mandibular insertion and anterior margin of eye 1.7-2.0 times as long as maximal diameter of eye in the major . . . . . Pheidole inornata
Pheidole inornata.jpg
major
Pheidole inornata casent0281670 p 1 high.jpg
minor
Pheidole inornata casent0281671 p 1 high.jpg