墙壁,天花板对于昆虫来说, 其实一点也不平。你拿放大镜看看就知道了,比徒手攀岩的人面对的峭壁要好爬得多。昆虫的脚上都有小钩(生理构造),以其轻盈的体重,在这样容易爬的地方站住简直是太容易了(力学)。BloodOnly females take blood meals. The blood is their resource for protein needed in ovary development. There is data that substantiates blood as also providing a source of energy since blood fed females have been shown to survive longer than females given only water. It is very common for a mosquito to take as much as 2-4 times their weight of blood in a single meal. Females can also excrete clear to reddish fluid while bloodfeeding in order to concentrate the protein as much as 2 fold (Figure), a process called diuresis.Mouthparts Used in FeedingMosquitoes have mouth parts conducive to taking up liquids. Females have more complex mouthparts because they must probe flowers and pierce skin. The mouthparts vary among the types of mosquitoes, especially among those who have different necessary functions such as those that take blood meals versus those that do not.Phases of Blood-feeding?? Exploration. After a mosquito lands on its host, it goes through an exploratory phase before penetrating the skin. Anopheles and Aedes remain stationary for a period of time after landing on a human. Host movement during this time causes the mosquito to leave. Without movement, the mosquito explores the skin either in the area of landing or sometimes moving around.?? Probing. Prior to penetration, the mosquito goes through a process of probing in which it touches its labium (not the proboscis) to the skin surface many times to decide where to penetrate with the proboscis. The mosquito then stabilizes by straightening the legs just prior to penetration.?? Penetration. Proboscis is inserted into the skin.?? Imbibing. This process begins when the palps stop vibrating from the penetration process.?? Withdrawal.This action takes about 3 seconds. A complete withdrawal can occur or only a partial one with re-insertion. After final withdrawal, the female usually flies away quickly.蚊子是 通过 热感来感觉的 天花板 墙壁 通常是一个温度 不易干扰感应