FIGURES 52–57 in Nesting and Developmental Biology of the Cleptoparasitic Bee Stelis ater (Anthidiini) and Its Host, Osmia chalybea (Osmiini) (Hymenoptera: Megachilidae)

FIGURES 52–57. SEM micrographs of cocoons of Stelis ater. 52. Cross section of cocoon wall showing three layers. 53. Close-up of area identified by rectangle in figure 52. Note non-fenestrated surface and thinness of inner layer in figs 52, 53. 54. Exterior surface of outer layer of nipple removed from rest of cocoon showing nature of fabric. 55. Close-up of area identified by rectangle in figure 54. 56. Under surface of outer layer of nipple removed from cocoon showing dense fibers. 57. Close-up of area identified by rectangle in figure 56, showing texture of fabric.