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... THE NERVOUS SYSTEM From the practical conducted, it is clear that blowflies lay their eggs on decaying material, such as the carcasses of dead animals. Larvae hatch from eggs and this is a temperature dependent process. Larvae – the maggots - have an outer cuticle and an inner epithelia basement membrane (Sawin, Harris, Campos, & Sokolowski, 1994, p. 353). The cuticle is 5µm thick in young larvae (36 hours, first instar), 25µm in 60-hour-old larvae (second instar), and 40µm in last (third) instar larvae. Maggot behavior is linked to instar development; for example, in the first and second instar the maggots stay close together and feed, but in the third instar, they move away from each other and...