Labels:airplane | animal | awning | book | car | common mosquito | curtain | earth | fence | flag | fountain | grass | railing | sand fly | sky | stage | tree | windowpane | wine glass | yellow fever mosquito OCR: flight represent the degenerated hind pair of wings normally developed in the four-winged insects. The abdomen of eight segments, like the thorax covered with hairs Each segment or ring consists of an upper and lower shield united by soft membrane This construction renders the parts highly movable and by the alternate contrac tion and expansion of the abdomen the insect breathes. Male mosquitoes generally exceed females in number and the enormous swarms of mosquitoes occasionally seen usually consist mainly of males which