Key to Old World Acropyga Workers

This key to queens is based on LaPolla, J. S. 2004. Acropyga (Hymenoptera: Formicidae) of the World. The American Entomological Institute 33(3):1-130.

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 * Acropyga

1

 * Southern Europe or Africa . . . . . 2


 * Australasian, Indo-Australian, and Oriental regions and southern Japan . . . . . 4

2
return to couplet #1
 * Head width > 0.55 mm; mandible with 6-9 teeth; southern Africa only . . . . . Acropyga arnoldi

Europe . . . . . 3
 * Head width < 0.55 mm; mandible with 4-8 teeth; West and East Africa and southern

3
return to couplet #2
 * Basal tooth distinctly offset from masticatory margin; torulae not particularily closely set; southern Europe (Greece) . . . . . Acropyga paleartica


 * Basal tooth not distinctly offset from masticatory margin; torulae closely set; West to East Africa . . . . . Acropyga silvestrii

4
return to couplet #1
 * Basal mandibular tooth large, rectangular and apically truncated . . . . . 5


 * Basal mandibular tooth roughly triangular, similar in size and shape to other teeth . . . . . 7

5
return to couplet #4
 * Mandible with 4 teeth; head width < 0.45 mm . . . . . Acropyga inezae


 * Mandible with 5 teeth; head width > 0.45 mm . . . . . . 6

6
return to couplet #5
 * Larger species (TL: 2 . 1 6-2.52); head width > 0.53 mm . . . . . Acropyga butteli


 * Smaller species (TL: 1 .97-2.05); head width < 0.53 mm . . . . . Acropyga nipponensis

7
return to couplet #4
 * Mandible with 3-4 teeth; antennae with 7- 11 segments . . . . . 8


 * Mandible with 5 or more teeth; antennae with 9-11 segments . . . . . 12

8
return to couplet #7
 * Head width < 0.45 mm . . . . . 9


 * Head width > 0.45 mm . . . . . 10