Key to Aphaenogaster gibbosa group workers

This worker key is based on: [[Media:Salata, S., Borowiec, L. 2018. Redescription of Aphaenogaster muschtaidica with a key to gibbosa species group.pdf|Salata, S., Borowiec, L. 2018. Redescription of Aphaenogaster muschtaidica Emery, 1908 with a key to gibbosa species group. Asian Myrmecology 10, e010002, pp. 1-15 (DOI 10.20362/am.010002).]]

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 * Aphaenogaster
 * Key to European Aphaenogaster workers
 * Aphaenogaster gibbosa group

1

 * Pronotum with transverse striation (Figs 13- 14) . . . . . 2
 * Pronotum with irregular rugosity, striation or partially smooth (Figs 15-17) . . . . . 3

2
return to couplet #1
 * Base of gaster with dense, longitudinal striation (Fig. 18). Spain . . . . . Aphaenogaster striativentris
 * Base of gaster smooth (Fig. 19). Morocco . . . . . Aphaenogaster theryi

3
return to couplet #1


 * Sculpture of pronotum reduced, its lateral surface at least in central part smooth and shiny (Fig. 15). Confirmed records from Iberian Peninsula and France . . . . . 4
 * Surface of pronotum lacking smooth areas (Figs 16-17) Confirmed records from Maghreb, Transcaucasus, Italy and Switzerland . . . . . 5

4
return to couplet #3
 * Head dorsum with smooth microreticulation, scape with adpressed setae, mesonotum humped, body brown . . . . . Aphaenogaster gibbosa


 * Head dorsum smooth and shiny, scape with decumbent setae, mesonotum not humped, body brownish black to black ................ Aphaenogaster sp. Spain (an undescribed species from the Iberian Peninsula. )

5
return to couplet #3
 * Propodeal spines small, tooth-like, with rounded tip (Fig. 20), longitudinal striation or reticulation limited to central part of frons (Fig. 23). Morocco . . . . . Aphaenogaster nadigi
 * Propodeal spines triangular, with sharp tip (Figs 2, 21, 22), longitudinal striation or reticulation exceeding beyond central part of frons (Figs 5, 24, 25). Italy, Switzerland and Transcaucasus . . . . . 6

6
return to couplet #5
 * Scape with decumbent setae, not longer than half of scape width (Fig. 26), Italy and Switzerland . . . . . Aphaenogaster italica


 * Scape with at least suberect setae, longer than half of scape width (Figs 3, 27) . . . . . 7

7
return to couplet #6
 * Scape with longitudinal rugae (Fig. 3), Transcaucasus . . . . . Aphaenogaster muschtaidica
 * Scape lacking longitudinal rugae (Fig. 27), Maghreb . . . . . Aphaenogaster mauritanica

and Aphaenogaster gibbosa homonyma