Fig. 1.

First instar of Chrysomya bezziana. a Anterior end of body, lateral view. b Functional mouth opening. c Antennal complex. d Maxillary palpus. e Ventral organ. f Third abdominal segment, ventral view, anterior spines. g Anal division, posterior view. Abbreviations: abr antennal basal ring, ad antennal dome, an antennal complex, ao anal opening, ap anal pad, cir cirri, mh mouthhooks, mp maxillary palpus, ll labial lobe, lo labial organ, ns1 first additional sensillum coeloconicum, ns2 second additional sensillum coeloconicum, or oral ridges, p1–p7 papillae 1–7 sb1–sb3 sensilla basiconica, sc1–sc3 sensilla coeloconica, sp posterior spiracle, vo ventral organ