Rutgers University
Rutgers University: Mosquito Biology
You can find some great diagrams and basic information about mosquitoes in these pages from the New Jersey Mosquito Control Association. Although it is state specific, the information is valuable for anyone looking at mosquitoes.
Curated OER
Science Kids: Science Images: Mosquito Anatomy Diagram
This mosquito anatomy diagram labels the different parts of the mosquito, a common insect found around the world. The labeled parts include the abdomen, thorax, head, wings, legs, proboscis, antennae, and more.