The Natural History of Flies |
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Page 36
... spiracles at the tip of the abdomen , themselves a modification making it easier to breathe in watery places , compel the larva to reach the air periodically , even if only at long intervals . If this is prevented , then diffusion of ...
... spiracles at the tip of the abdomen , themselves a modification making it easier to breathe in watery places , compel the larva to reach the air periodically , even if only at long intervals . If this is prevented , then diffusion of ...
Page 91
... spiracles . Anopheline larvae have the two spiracles on the eighth segment , and to keep these exposed to the air the whole body must lie horizontally , supported by tufts of ' float - hairs ' on each segment , like a drift - net or an ...
... spiracles . Anopheline larvae have the two spiracles on the eighth segment , and to keep these exposed to the air the whole body must lie horizontally , supported by tufts of ' float - hairs ' on each segment , like a drift - net or an ...
Page 188
... spiracles only on the posterior segment . These spiracles open near the tips of two sharp , hollow spines , which are usually inserted into the tissue of the plant , and are presumed to draw oxygen from it . The pupae are very similar ...
... spiracles only on the posterior segment . These spiracles open near the tips of two sharp , hollow spines , which are usually inserted into the tissue of the plant , and are presumed to draw oxygen from it . The pupae are very similar ...
Contents
THE PATTERN OF FLIES 3 | 3 |
THE LIFEHISTORY OF FLIES | 12 |
Part | 27 |
Copyright | |
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abdomen able actively adapted adult adult flies African already animals appearance aquatic areas attack attracted become birds biting blood body breed called carnivorous carried cause Chapter close common countries crane-flies developed difficult disease effect eggs emerge evolution evolved example eyes fact feeding female Figure flies flight flowers genera genus give gnats habit habitats head horse-flies host human insects interesting known larvae later leaves legs less live look males mass materials mating mentioned midges mosquitoes move natural nearly nests occur organic parasites particularly perhaps plants present prey primitive probably proboscis pupae recent rest robber-flies round seems seen similar skin soil sometimes species spiracles stage structure suck suggests surface swarms tion tissues tropical true usually vegetation wings