Key to Holartic Cardiocondyla

This worker key is based on:

l

 * Postpetiolar sternite in anterodorsolateral view with prominent anterolateral corners and its anterior margin appearing concave in this viewing position. Minute species with CS < 470 . . . . . 2


 * Postpetiolar sternite in anterodorsolateral view without prominent anterolateral corners . . . . . 8

2
return to couplet #1
 * Head short (CL/CW < 1.19), Frons wider (FRS/CS > 0.254). C. wroughtonii group . . . . . 3


 * Head longer, frons narrower . . . . . 6