Key to Dolichoderus of the southwestern Australian Botanical Province

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This key to workers is based on: Heterick, B. E. 2009a. A guide to the ants of South-western Australia. Records of the Western Australian Museum, Supplement 76: 1-206. Part 1 PDF

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1

  • Propodeum armed with a pair of sharp spines (ypsilon group) . . . . . 2

2

return to couplet #1

  • Femur, tibia and tarsi dark reddish-brown or black . . . . . 4

3

return to couplet #2

  • Viewed from front, propodeum spines directed upward at angle of greater than 60° to horizontal plane (may be almost vertical) (Figure 135) . . . . . Dolichoderus angusticornis
Figure 135.
Dolichoderus angusticornis ANIC32-060468 head 32-Antwiki.jpg
Dolichoderus angusticornis ANIC32-060468 side 20-Antwiki.jpg
  • Viewed from front, propodeal spines directed upward at angle of 45° or less to horizontal plane (Figure 136) . . . . . Dolichoderus ypsilon
Figure 136.
Dolichoderus ypsilon syntype ANIC32-015061 head 50-Antwiki.jpg
Dolichoderus ypsilon syntype ANIC32-015061 side 25-Antwiki.jpg

4

return to couplet #2

  • Femur, tibia and tarsi black; pubescence on gaster off-white . . . . . Dolichoderus niger
Dolichoderus niger ANIC32-063766 head 25-Antwiki.jpg
Dolichoderus niger ANIC32-063766 side 20-Antwiki.jpg
Dolichoderus rufotibialis ANIC32-060511 head 32-Antwiki.jpg
Dolichoderus rufotibialis ANIC32-060511 side 25-Antwiki.jpg

5

return to couplet #1

  • Declivitous face of propodeum straight (Figure 137); head smooth and shining . . . . . Dolichoderus parvus
Figure 137.
Dolichoderus glauerti ANIC32-061179 head 80-Antwiki.jpg
Dolichoderus glauerti ANIC32-061179 side 32-Antwiki.jpg
  • Declivitous face of propodeum weakly to strongly concave (Figure 138); head with distinct sculpture . . . . . 6
Figure 138.

6

return to couplet #5

  • Pronotal sculpture weakly rugose-punctate, or sculpture largely lacking (Figure 139) . . . . . 7
Figure 139.
  • Pronotal sculpture distinctly foveate-reticulate (Figure 140) . . . . . 9
Figure 140.

7

return to couplet #6

  • Standing setae on head, antennal scapes, mesosoma and gaster sparse and short (≤ greatest width of antennal scape), sparse or absent on tibiae; usually pale, depigmented . . . . . Dolichoderus sp. JDM 1106
  • Standing setae on head, antennal scapes, mesosoma and gaster abundant and longer (longest setae >> greatest width of antennal scape), present on tibiae; body bicoloured (mesosoma orange to yellowish-brown, gaster and often head brown) . . . . . 8

8

return to couplet #7

  • Dorsum of propodeum strongly convex, carina separating dorsal and declivitous faces of propodeum not produced as a sharp shelf (Figure 141); without pale markings near lower margin of eyes; sculpture of pronotum almost lacking, pronotum shining . . . . . Dolichoderus clusor
Figure 141.
Dolichoderus clusor ANIC32-061187 head 63-Antwiki.jpg
Dolichoderus clusor ANIC32-061187 side 32-Antwiki.jpg
  • Dorsum of propodeum weakly convex, carina separating dorsal and declivitous faces of propodeum produced as sharp shelf (Figure 142); pale markings present near lower margin of eye; sculpture of pronotum weakly rugosepunctate . . . . . Dolichoderus sp. JDM 513
Figure 142.

9

return to couplet #6

  • Propodeal dorsum not evenly convex, declivitous face very deeply concave, concavity almost semi-circular (Figure 143) . . . . . Dolichoderus reflexus
Figure 143.
Dolichoderus armstrongi holotype ANIC32-007964 head 63-Antwiki.jpg
Dolichoderus armstrongi holotype ANIC32-007964 side 32-Antwiki.jpg
  • Propodeal dorsum evenly convex, declivitous face less deeply concave, concavity much less than a semi-circle in extent (Figure 144) . . . . . 10
Figure 144.

10

return to couplet #9

Dolichoderus nigricornis ANIC32-063770 head 50-Antwiki.jpg
Dolichoderus nigricornis ANIC32-063770 side 25-Antwiki.jpg
Dolichoderus formosus ANIC32-061196 head 50-Antwiki.jpg
Dolichoderus formosus ANIC32-061196 side 32-Antwiki.jpg