Air tubes of Culicid larvae 



1 Air tube of larva of yellow fever mosquito, Stegomyia fasciata 



Fabr. x55 



2 Air tube of larva of house or rain barrel mosquito, Culex pipiens 



Linn. xS5 



3 Air tube of larva of salt marsh mosquito, Culex sollicitans 



Walk. X45 



