Phylogenetic tree of insulin-like peptides (ILPs) and insulin.

Ha: Homo sapiens, Aa: Aedes aegypti, Ag: Anopheles gambiae, Bc: Branchiostoma californiense, Bm: Bombyx mori, Bt: Bos taurus, Ce: Caenorhabditis elegans, Cg: Crassostrea gigas, Cp: Culex pipiens, Cq:Culex quinquefasciatus, Dm: Drosophila melanogaster, Dn: Dufourea novaeangliae, Em: Eufriesea Mexicana, Hl: Habropoda laboriosa, Hs: Homo sapiens, Lm: Locusta migratoria, Mq: Melipona quadrifasciata, Nl: Nilaparvata lugens, Pc: Priapulus caudatus, Zn: Zootermopsis nevadensis.