 Bursicon is found in different insects and considered to be unspecific.It is produced by median neurosecretory cells in the brain, circulates in blood and stored in corpora cardiaca.The structure of the protein has been investigated well in fruit fly ("Drosophila melanogaster"), and in some insect species bursicon gene has been sequenced, including the mosquito ("Anopheles gambiae"), cricket ("Gryllus bimaculatus"), locust ("Locusta migratoria"), and mealworm ("Tenebrio molitor").