part_of part of part of continuous with continuous with adjacent to adjacent to mesonotum mesocoxal muscle basal mesocoxal conjunctiva mesosternum cuticle of mesothorax pleuron mesopleuron The region of the cuticle on the lateral region of the mesothorax that is attached to the mesonotum and the mesosternum, and is attached to the mesocoxa by the mesocoxal muscle and the basal mesocoxal conjunctiva. lateral region