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The mosquito (ka) is an insect belonging to the Culicidae family of the order Diptera. About 50 species of the three sub-families of Culicidae (Toxorhynchitinae, Culicinae and Anophelinae) are found in Japan. The female of most species of mosquito sucks blood – in many cases the blood of warm-blooded animals – in order to nourish and mature her eggs. Her life-span is longer than that of the male.
Three representative species of mosquito were fixed in acrylic resin and stored in the capsule: Culex pipiens pallens, a red-brown mosquito which breeds in sewage, ponds and water-holes and sucks blood at night from domestic fowl; a carrier of filariasis. Culex tritaeniorhynchus summorosus, a red-brown mosquito smaller than C. pipiens pallens breeding principally in rice paddies in western Japan and night-active, sucking blood from cattle and pigs; a carrier of Japanese encephalitis. Anopheles sinensis, a large paddy-breeding mosquito with distinguishing spots on its wings; it sucks blood from cattle and horses and carries malaria.
The word fly (hae) is commonly used to describe many kinds of winged insects, but true flies are two-winged insects belonging to the order Diptera. The number of known species in the world amounts to many tens of thousands and several hundred species are found in Japan. Typically, they breed in waste matter, farmyards and in the excreta of cattle, horses and domestic fowl. The common house-fly of Japan (Musca domestica vicina) and a green-fly (Phoenecia sericata) were fixed in acrylic resin and induded in the capsule. Both carry diseases of the digestive system.
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