Fig. 4

Scanning electron micrographs of C. titillator. A SEM of the cephalic, thoracic and abdominal segments of a first-stage C. titillator larvae (bar = 1.0 mm); B Ventral view of the cephalic and thoracic segments of first-stage C. titillator larvae (bar = 500 μm); C The small spines were numerous and irregularly distributed in dorsal and ventral rows in first-stage C. titillator larvae (bar = 200 μm); D SEM of the terminal abdominal segments of a first-stage C. titillator larvae (bar = 1.0 mm); E SEM of the ventral surface of the cephalic and thoracic segments of a third-stage C. titillator larvae recovered from a camel. Note the bases of antennal lobes are widely separated. Note the large number of spines (bar = 1.0 mm); F The third-stage C. titillator larvae papillae note the button-shaped papillae (bar = 10 μm); G SEM of the surface of the fleshy spines of a third-stage larvae (bar = 1.0 mm); H SEM of the terminal abdominal segment of a third-stage C. titillator larvae (bar = 1.0 mm)