Fig. 8
From: The loss of flight in ant workers enabled an evolutionary redesign of the thorax for ground labour
Three-dimensional section through the thorax of female mutillid (subfamily Mutillinae, tribe Smicromyrmini or Trogaspidiini). Inset (top right) indicates the plane of virtual sectioning. Note the greatly enlarged abdomen muscles (IA1 and IA2) that attach more anteriorly than in ant workers