Fig. 7From: Skeletomuscular adaptations of head and legs of Melissotarsus ants for tunnelling through living woodMandible shape and lever effects in Melissotarsus worker. AdM, closer muscle insertion; AbM, opener muscle insertion; Md, mandible: a, ventral condyle; b, dorsal acetabulum; dashed line, mandible axis of rotation (hinge); c, mandible tip; cl, closer lever; ol, opener leverBack to article page