Posterior head morphology Asilidae (Figs 31-32) DikowTorsten 2013 <p>Heads in posterior view. 33. <em>Stichopogon trifasciatus</em> (Stichopogoninae). 34. <em>Apoclea algira</em> (Asilinae). Occipital foramina grey; vestiture omitted. Scale lines = 1 mm.</p>