Fig. 11. Micrographs of the mesophragma of female representatives of apine bees, posterior view, dorsal to the top. (a) Centris analis (Fabricius, 1804). (b) Euglossa cordata (Linnaeus, 1758). (c) Bombus pauloensis Friese, 1913. (d) Tetragonula carbonaria (Smith, 1854). (e) Apis mellifera Linnaeus, 1758. (f) Schematic representation depicting the general anatomy and relative positions of the elements of the internal morphology of mesosoma. Solid arrow indicates the mesophragma in posterior view. Arrowheads indicate morphological conditions coded as character states. Scale bars: 0.2 mm.