Bites Mosquito Bites By Sean, Alex, Eileen, Jenny Rose, and Molly Only female mosquitoes bite people because they need the blood to lay their eggs. Male mosquitoes only suck plant juices. The female mosquito selects a spot on her victim and starts sawing through with her proboscis. Then she injects the saliva into the spot so the blood will flow easily into her abdomen.
Females usually suck the blood in the night.
The bump you get from a mosquito bite is the saliva that the mosquito leaves in your body. Your body tries to push the saliva out so it stretches your skin and it forms a bump. So now you know what that big red bump is.