House Fly Puparium

Found globally near human activity, particularly in areas with decaying organic matter, trash, or animal waste.

In this pupal stage, the insect does not eat. Larvae eat decaying organic matter, while adults eat liquid or semi-liquid substances.

This is the non-feeding, immobile transformation stage between the larva (maggot) and the adult fly. It lasts roughly 4 to 6 days depending on temperature.

While puparia are harmless, the resulting house flies are major vectors for diseases like salmonella and E. coli. They aid in the ecosystem by breaking down organic waste.