Experimental hibernation of Culex tritaeniorhynchus in Nagasaki, Japan

To examine experimentally the suitable conditions for the hibernation of Culex tr itaeniorhynchus, adult mosquitoes which received various pretreatment were exposed to different hibernating conditions. The results of the experiment show that: The place where is nearly dark day and night and mild and possibly stable in air conditions seems to be the most favorable for the hibernation of the mosquito; the place where is nearly dark, though greatly variable in air conditions to be not much unfavorable; while, the place where is light in daytime to be unfavorable