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Chrysomya rufifacies
Chrysomya rufifacies is a species belonging to the blow-fly family, Calliphoridae, and is largely important in forensic entomology. This species' common name is the hairy maggot blowfly and it belongs to the Genus, Chrysomya, which is commonly referred to as the Old World screw-worms. Chrysomya rufifacies prefer very warm weather and have a relatively short life cycle with a greenish metallic appearance.

Larvae
Chrysomya rufifacies was given the common name, hairy maggot blow fly, for obvious reasons. Its larvae are very easily identified with sharp fleshy tubercles running down its body and the mature larva is about 14 mm in length with a dirty yellowish color. The peritreme of the posterior spiracle is very wide with a narrow gap that contains forked edges; the slits are short and wide almost filling the plate.

Adult
The quick and easy identification of this adult blow-fly is that it has a shiny metallic blue-green color, a pale genal dilation, and the vestiture of the anterior thoracic spiracle is pale in color. The mature adult is about 6 – 12mm in length.

A trained eye can use better differentiated characteristics in order to be sure to key the blow fly out correctly. Using a microscope one could make sure the fly contained setae on its meron, a greater ampulla with stiff erect setae, black first and second abdominal tergites, and a black posterior margin of the third and fourth abdominal tergites which would bring you to the conclusion that the fly is in the Genus, Chrysomya. The differentiation between megacephala and rufifacies is done by observing the anterior thoracic spiracle color. As mentioned above, Chrysomya rufifacies has a pale or white anterior thoracic spiracle where as Chrysomya megacephala has a dark brown or dark orange anterior thoracic spiracle. It should also be noted that Chrysomya rufifacies contains three faint pronotal thoracic stripes which are difficult to see.