Fig. 3.

Scanning electron micrographs (SEMs) of the normal third instar larvae of L. sericata. a SEM of whole larva shows the typical maggot-like body shape. The body cuticle is smooth with intersegmental spines projected backward (inset). b SEM of the anterior end of larva. c SEM of the posterior end of larva. d SEM of the anterior spiracle shows a fan-like structure with 6-7 lobes. e SEM of posterior spiracles shows the button and three straight slits in each posterior spiracle. AE anterior end, PE posterior end, A antenna, P papilla, OC oral cristae, MP maxillary palp, BH bucal hook, AP anal papilla, DP dorsal papilla, VP venteral papilla, AO anal opening, PS posterior spiracle