Figure 11 in Comparative morphology of the skeletal parts of the sting apparatus of bees (Hymenoptera: Apoidea)

Figure 11. Variation in structure of the furcula and sting shaft in the Apoidea, viewed from the anterior unless otherwise stated. (A) Tachytes, showing articulation of furcula with the processi mediani on each side of the sting shaft base, ventral view with furcula rotated anteriorly. (B) Colletes, showing dorsal and lateral views of sting shaft with inset enlarged view of sting shaft base, anterior to left. (C) Hesperapis, lateral view of sting shaft and furcula, anterior to left. (D) Hylaeus, anterior and lateral views of furcula. (E) Colletes, furcula. (F) Macropis, furcula and base of sting shaft and other sting sclerites, dorsal towards top of figure. (G) Lithurgus, furcula and sting shaft base with furcula rotated somewhat anteriorly. (H) Megachile, furcula. (I) Epeolus, furcula, sting shaft base and portions of sting sclerites, dorsal towards top of figure.