The larvae are whitish in colour with no legs and hook like proboscis, growing to a size of 18mm. Pupa are a reddish brown and will usually be found away from the carrion in a dry environment.
Adults of the three species vary in colouration:
Caliphora – A metallic blue body.
Lucillia – A metallic green body.
Sarcophagi – A grey and black striped thorax with bright red eyes.
The larvae are found anywhere there is carrion, frequently becoming pests of meat factories, slaughter houses or sites where there are dead animals (including rodent bodies).
Larvae tend to produce ammonia when they moult giving carrion a distinct and unpleasant smell. Adults can be seen flying through the air.
1. The British Pest Management Manual. Section 5, pg 161.
2. Lab notes, Tarakan International.