Source: https://www.researchgate.net/profile/Suwarno_Suwarno6/publication/314585851_Population_dynamic_of_the_swallowtail_butterfly_Papilio_polytes_Lepidoptera_Papilionidae_in_dry_and_wet_seasons/links/5f736a5b458515b7cf585738/Population-dynamic-of-the-swallowtail-butterfly-Papilio-polytes-Lepidoptera-Papilionidae-in-dry-and-wet-seasons.pdf