Colorized µCT surface renders of the head of S. ayersthey sp. nov. A head in full face view and B view from apex of mandibles looking towards base of mandibles. Black arrows represent closing motions and red arrows represent opening motions of mandibles. Abbreviations: bpm – basal process of mandible, clp – clypeus (yellow), dfc – dorsal articular surface of oral cavity (green), dmap – dorsal articular process of mandible, lbp – labral articular process, lh – labral hood, lbm – labrum (lavender), md – mandible (red), vmap – ventral articular process of mandible, vpc – ventral articular process of clypeus in orange. As the mandibles open towards latched position, the labrum (lbm) hinges upwards such that the basal mandibular process (bmp) latches into the complementary pocket of the labrum (lbp) and the dorsal articular process of the mandible (dmap) articulates freely within the dorsal articular surface of the oral cavity (dfc) around the ventral process of the clypeus (vpc). The labral hood (lh) and the ventral processes of the clypeus (vpc) forms a pair of pockets housing the basal mandibular process (bmp) of each mandible.

  Part of: Booher DB, Hoenle PO (2021) A new species group of Strumigenys (Hymenoptera, Formicidae) from Ecuador, with a description of its mandible morphology. ZooKeys 1036: 1-19.