Fig. 5
From: The loss of flight in ant workers enabled an evolutionary redesign of the thorax for ground labour
Loss of wing muscles and geometry of leg muscles and petiole levators in Cataglyphis savignyi. a In queens, wing muscles restrict both leg and petiole muscles. b In workers, the external trochanter muscles (orange) of the midlegs (IIscm6) and hindlegs (IIIscm6) are extended to originate high on the roof of the mesothorax (T2) and the lateral walls of propodeum (IA) respectively, while the levators of the petiole (green) increased in volume to fill up almost the entire propodeal cavity. T2/T3 furcae are not shown. Note thinner cuticle relative to Euponera (Fig. 4)