Fig. 2
From: Morphological and molecular characterization of Setaria equina in donkeys
Light microscopy of adult S. equina. a2 Anterior end of adult showing vulva (curved arrow) and mouth surrounded by labial and external labial papillae. b2 Anterior end of S. equina showing peribuccal crown (pbc) surrounded by external labial and cephalic papillae (red circles). c2 Higher magnification of external labial and cephalic papillae. d2 Vulva (curved arrow). e2, f2 Male caudal end carried spicules (S) and caudal papillae (arrow heads). g2 Lateral view of male tip tail carrying lateral appendage (La). h2 Female tail provided with pair of lateral appendages (La) and ended with smooth knob (Kn, Digital camera, × 100)