When Aedes aegypti or Aedes albopictus, both species of Aedes mosquito, lands on your skin and sticks in it's long nose—or proboscis, it pierces the epidermis which is the topmost layer, composed almost entirely of keratinocytes.
There are bluish mosquitoes, golden mosquitoes, striped mosquitoes, spotted mosquitoes, mosquitoes with apt species names like Aedes excrucians and Aedes vexans.
The authorities hope this will solve the problem posed by Aedes aegypti, a mosquito which can carry Zika and dengue, and in some places, has become resistant to pesticides.