Has the insect a black body and prominent white markings?
Yes
the insect is black and has prominent white markings
The body of the Asian tiger mosquito is covered in black scales. In between, white and silver scales generate a striking color pattern. Your insect could be an Asian tiger mosquito if such a color pattern is visible.
No
the insect is not black and has no prominent white markings
The body of the Asian tiger mosquito is covered in black scales. In between, white and silver scales generate a striking color pattern. Your insect is no Asian tiger mosquito if such a color pattern is missing.