2014 $1 Bright Bugs-Blow Fly Coloured Frosted Uncirculated Coin. There is around 1100 species of Calliphoridae, or blow flies, around the world. They thrive in warm climates where damp, soft soil is available for reproduction. Adult flies sometimes consume nectar, but also need protein from meat, dung or other tissue. Mintage 30,000. Please contact Adelaide Exchange Jewellers to find out more on this item.