Thorax is light grey and has 3 dark longitudinal stripes
Abdomen is also light grey, spotted with dark patches to give a checker board appearance
Lifecycle
Lifecycle lasts for 2-4 weeks
The female deposits live larvae on a suitable feeding medium (this can range from spoilt meat or fish, or animal excrement, or in decaying food waste found in garbage bins)
Larvae feed for a few days, then move away from the feeding medium to pupate in adjacent drier parts
Habits
They are attracted to decaying wastes, excrement and human foods – making a threat to human health