FIGURE 1 in Post-embryonic development of intramandibular glands of Friesella schrottkyi (Friese, 1900) (Hymenoptera: Apidae) workers

FIGURE 1: Mandible sections of Friesella schrottkyi (Hymenoptera, Apidae) worker pupae with toluidine blue. (A): Apex of the mandible in white-eyed pupae showing the larval cuticle (lc) and epidermal cells (ep). (B): Mandible of pink-eyed pupae showing epidermal cells (ep) with basophil apex (*). (C-D): Mandible in brown-eyed pupae showing the new cuticle (ct), epidermal cells (ep) and secretory cells (sc). (E): Mandible in black-eyed pupae showing secretory cells (sc) and epidermal cells (ep). ct: cuticle; n: nucleus. (F): Mandible in newly emerged worker showing epidermal cells (ep), secretory cells (sc) and canaliculus (ca). n: nucleus.