Do those insects sting?

In the end, it bites like a snake, and poisons like a viper.

At the last it biteth like a serpent, and stingeth like an adder.

You have to get burnt to save your home from fire.

And everywhere the lash of watchful taskmasters ready to sting the backs of the weary.

With a little research, she would have discovered that male mosquitoes do not bite, and that the released mosquitoes (all male) die in the absence of their specially supplemented diet.