From Longman Dictionary of Contemporary Englishmosquitomos‧qui‧to /məˈskiːtəʊ $ -toʊ/ ●○○ noun (plural mosquitoes or mosquitos) [countable] 
HBIa small flying insect that sucks the blood of people and animals, sometimes spreading the disease malaria
HBIa small flying insect that sucks the blood of people and animals, sometimes spreading the disease malariaExamples from the Corpus
mosquito• It opens up with the sound of a mosquito and gets louder and louder.• Hanson anticipates ground spraying to kill adult mosquitoes by midweek.• Even as I listened to him, mosquitoes, fat as houseflies, feasted on my legs.• We also found with a sense of great relief that there were no mosquitoes!• No breath of air stirred the Collector's mosquito net.• Then, mosquitoes and steamy jungle heat along a path that went up and up.• But my purse contained torch, mosquito repellent, passport and all the papers needed to subdue bureaucrats from here to Delhi.Origin mosquito (1500-1600) Spanish mosca “fly”, from Latin musca 