Scientists have successfully explained two male mosquito fossils found in Lebanese amber. These mosquito fossils have been preserved in amber since the early Cretaceous period, approximately 145 to 100 million years ago. The discovery of these fossils has surprised scientists and raised questions about the theory of evolution of blood-sucking insects.

"Previously, scientists believed that the habit of sucking blood emerged as a transition from the behavior of sucking nectar in insects. However, the discovery that male mosquitoes also had a habit of sucking blood in the past shook the previous view that only female mosquitoes suck blood."

This shows that the evolution of feeding behavior may be more complex than previously thought. Although it is currently believed that only female mosquitoes suck blood, both male and female mosquitoes actually feed on nectar.