Key to Aphaenogaster workers of Europe

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

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Aphaenogaster

1

Aphaenogaster cecconii casent0179868 p 1 high.jpg

2

return to couplet #1

  • Scape stands well over of the occiput. Middle funicular segments longer than broad . . . . . 3
Aphaenogaster pallida casent0280960 p 1 high.jpg
Aphaenogaster obsidiana casent0280957 p 1 high.jpg

3

return to couplet #2

  • Second funicular segment > 1.5 longer than wide.Hind tibia more than eight times longer than broad . . . . . 4
Aphaenogaster sicula casent0904177 p 1 high.jpg

4

return to couplet #3

  • Gaster mainly smooth, sculpture, if present, restricted to basal part of first gasteral tergite. Head and mesosoma without punctuation . . . . . 5
  • At least anterior part of the dorsal side of the first gastral tergite finely and densely microstriate, often in a fingerprint-like pattern. Head and mesosoma punctate . . . . . 6

5

return to couplet #4

Aphaenogaster striativentris casent0280964 p 1 high.jpg
Aphaenogaster cardenai casent0249624 p 1 high.jpg

6

return to couplet #4

  • Petiole swollen, spherical, relative width: PI-mean 89. Base of gaster on dorsal side with some transverse microstriae, other part without microstriae. Propodeum angulate or with short spines that resemble little thorns. Hind tibia ca. 8 times longer than wide. Head and mesosoma yellow brown red to light rust brown . . . . . Aphaenogaster sardoa
Aphaenogaster sardoa casent0900461 p 1 high.jpg
  • Petiole in dorsal view not spherical: PI-mean < 84. Base of gaster on dorsal side with longitudinal microstriae, sometimes (almost) lacking; if transverse microstriae then antennal club 5-segmented. Hind tibia ca. 9 times longer than wide. Darker . . . . . Aphaenogaster testaceopilosa-group
Aphaenogaster senilis casent0281534 p 1 high.jpg