House fly
Asia, the insect expanded its range worldwide long ago as a commensal organism to human populations; the housefly is always found in association with human [...] House fly The adult house fly ( Musca domestica ) is 6–7 mm long, yellowish-grey to dark grey in colour, with four narrow black stripes on the thorax, [...] they crawl to a cool, dry place near the breeding site to pupate. Flies in the pupal stage are oval-shaped, with bluntly rounded ends, about 8 mm long