Figure 4 in Description of a new genus of primitive ants from Canadian amber, with the study of relationships between stem- and crown-group ants (Hymenoptera: Formicidae)

Figure 4. Bivariate plots (females). A) Scape length versus head length. B) Flagellum length versus head length. C) Scape length versus flagellum length. D) Pedicel length versus head length. E) Flagellomere 1 length versus head length. F) Flagellomere 2 length versus head length. (Note: Filled circles are crown-group ants; open circles are Sphecomyrmini; triangles are Haidomyrmecini; A - Armaniinae (sensu Bolton 2003); C - Cananeuretus occidentalis; G - Gerontoformica cretacica; M - Myanmyrma gracilis. Regression lines for crown-group ants (solid line), Sphecomyrmini (dashed line), and Haidomyrmecini (dash-dotted line) are shown in cases where statistical difference between at least two groups was found).