The Natural History of Flies |
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Page 3
... wings in the course of evolution ; how are we to recognize these ? Flies have adapted the second pair of wings , now disused for flight , into halteres , knobbed organs which act as gyroscopic stabilizers during flight , and which can ...
... wings in the course of evolution ; how are we to recognize these ? Flies have adapted the second pair of wings , now disused for flight , into halteres , knobbed organs which act as gyroscopic stabilizers during flight , and which can ...
Page 114
... wings over each other like a pair of scissors , and in that position the wings exactly covered the silvery stripe , so that the whole fly became dark , and quite incon- spicuous against a leaf . Now this scissor - like closing of the ...
... wings over each other like a pair of scissors , and in that position the wings exactly covered the silvery stripe , so that the whole fly became dark , and quite incon- spicuous against a leaf . Now this scissor - like closing of the ...
Page 198
... wings . The pattern of the wings is most intricate , and is displayed when the flies walk slowly about , raising and lowering the wings . As we have seen in , say , Sepsidae , this can have a part in courtship behaviour , but it is ...
... wings . The pattern of the wings is most intricate , and is displayed when the flies walk slowly about , raising and lowering the wings . As we have seen in , say , Sepsidae , this can have a part in courtship behaviour , but it is ...
Contents
THE PATTERN OF FLIES 32 | 3 |
THE LIFEHISTORY OF FLIES | 12 |
CRANEFLIES | 29 |
Copyright | |
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abdomen acalyptrate actively adapted adult flies African Agromyzidae animals appearance aquatic larvae Asilidae attack bats bee-flies bees behaviour biological birds biting black-flies blood bloodsucking blow-flies body Bombyliidae Brachycera breed Calliphora carnivorous Cecidomyiidae Chapter Chironomidae Chloropidae Chrysops crane-flies Cyclorrhapha decaying developed Diptera disease Dolichopodidae dung egg-laying eggs emerge Empididae Empids Ephydridae evolution evolutionary evolved eyes families of flies female flight flowers genera genus gnats habit habitats head Hippoboscidae horse-flies host hover-flies hovering insects known large numbers larvae larvae feed larvae live legs Lucilia maggot males mammals mandibles mating midges mosquitoes mouthparts Muscidae Mycetophilidae Nematocera nests non-biting Nycteribiidae organic oxygen parasites perhaps Phorids piercing plants prey primitive proboscis pupae pupal pupate robber-flies seen Simulium skin soil sometimes species spiracles stage Stratiomyidae Streblidae sub-family suck surface swarms Syrphid Syrphidae Tabanidae Tabanus terrestrial thorax tion tissues tropical Trypetidae tsetse-flies vegetation wasps wings