Key to West European Crematogaster species

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This key is based on specimens and was initially created by Xavier Espadaler and Kiko Gómez for www.hormigas.org. Has been modified to add Crematogaster schmidti


1

  • Petiolar node in dorsal view with subparallel sides, slightly widening backwards. Length < 3 mm (Subgenus Orthocrema) …..Crematogaster sordidula
Crematogaster sordidula petiolar node on dorsal view
Crematogaster sordidula casent0106292 p 1 high.jpg
Crematogaster sordidula casent0106292 d 1 high.jpg
  • Petiolar node in dorsal view clearly narrowing backwards. Length 3,2 - 5 mm (Subgenus Crematogaster) .....2
Crematogaster scutellaris petiolar node on dorsal view

2

return to couplet .....1

Crematogaster inermis casent0908481 p 1 high.jpg
  • Propodeum with teeth or spines .....3

3

return to couplet .....2

Crematogaster scutellaris casent0173120 profile 1.jpg

4

return to couplet .....3

  • Spines very short, triangular (NOTE: The C. fuentei drawing is the only one we have noticed, from the original Menozzi description in 1922. It hasn't been captured since then). …..Crematogaster fuentei


  • Spines clearly visible ….......5


5

return to couplet .....4

Crematogaster schmidti casent0080779 profile 1.jpg


  • Colour dark brown to black. Pronotum smooth to very slightly sculptured ….......6

6

return to couplet .....5

  • Subcylindrical and slender spines, much longer than base width. Some quetae in the first gastral tergite. Brown to dark brown …..Crematogaster auberti
Crematogaster auberti casent0281539 p 1 high.jpg
  • Short and triangular spines, slightly curved, with length comparable to base width. Several quetae present on first gastral tergite. Black …..Crematogaster laestrygon
Crematogaster laestrygon casent0281538 p 1 high.jpg

References