Key to Aphaenogaster European testaceopilosa-group queens

This key to queens is based on: Boer, P. 2013. Revision of the European ants of the Aphaenogaster testaceopilosa-group (Hymenoptera: Formicidae). Tijdschrift voor Entomologie 156, 57–93. [[Media:Boer, P. 2013. Revision of the European ants of the Aphaenogaster testaceopilosa group.pdf|PDF]]

Identifications should be preferably based on several specimens from the same colony, if possible of all three castes. Gynes of Aphaenogaster balcanicoides, Aphaenogaster karpathica and Aphaenogaster spinosa are unknown.

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 * Aphaenogaster
 * Key to Aphaenogaster European testaceopilosa-group workers and males

1

 * Antennal club 5-segmented . . . . . 2


 * Antennal club 4-segmented . . . . . 3

2
return to couplet #1
 * Propodeum denticulate . . . . . Aphaenogaster gemella


 * Propodeal spines prominent . . . . . Aphaenogaster senilis

3
return to couplet #1
 * Propodeum with thorns or spines . . . . . 4


 * Probably (as in worker): Propodeum angulate, without spines or thorns . . . . . Aphaenogaster inermita

4
return to couplet #3
 * CI < 85, SI > 121 . . . . . 5


 * CI > 85, SI < 121 . . . . . 7

5
return to couplet #4
 * PPPI < 82, PSLWI > 85, RPSI > 45. Punctation on mesosoma weak . . . . . 6


 * PPPI 89, PSLWI 73, RPSI 35. Punctation on mesosoma distinct . . . . . Aphaenogaster sporadis

6
return to couplet #5
 * PI > 76 . . . . . Aphaenogaster simonellii


 * PI < 76 . . . . . Aphaenogaster iberica

7
return to couplet #4
 * Propodeal spines longer PSI > 185. Gaster matt to satin . . . . . 8


 * Propodeal spines shorter PSI < 180. Gaster glossy to shiny . . . . . Aphaenogaster semipolita

8
return to couplet #7
 * Propodeum does not make an angle with the metanotum and scutellum. Propodeum in lateral view straight. Clypeus with longitudinal rugulae. RPSI < 60 . . . . . 9


 * Propodeum makes a right angle with the metanotum and scutellum. Propodeum in lateral view slightly bulging. Rugulae on clypeus transverse. RPSI > 60 . . . . . Aphaenogaster campana

9
return to couplet #8
 * Petiole wider compared to postpetiole: PI 70–78. PPPI 63–68. Propodeal spines erected: SPL 4 . . . . . Aphaenogaster balcanica . . . . . and . . . . . Aphaenogaster melitensis


 * Petiole narrow compared to postpetiole: PI 67–68. PPPI 75–80. Propodeal spines more horizontal: SPL 1–2 . . . . . Aphaenogaster picena