FIGURE 2 in Post-embryonic development of intramandibular glands of Friesella schrottkyi (Friese, 1900) (Hymenoptera: Apidae) workers

FIGURE 2: Mandible sections of Friesella schrottkyi (Hymenoptera: Apidae) worker pupae submitted to histochemical tests. (A): Whiteeyed pupae showing the mandible cavity and epidermal cells (ep) Periodic acid-Schiff (PAS) positive. lc; larval cuticle. (B): Brown-eyed pupae showing the secretory cells (sc) and epidermal cells (ep) positive to protein. (C-D): Black-eyed pupae showing the epidermal cells (ep) and secretory cells (sc) Periodic acid-Schiff positive. ct: cuticle. (E-F): Black-eyed pupae showing the epidermal cells (ep) and secretory cells (sc) positive to protein. n: nucleus; ct: cuticle; s: sensilla; ca: canaliculus.