![[Image, dipt017b.gif]](http://biodidac.bio.uottawa.ca/thumbnails/images/dipt017b.gif)
dipt017b.gif
Diptera-
Mosquito larva showing the internal tracheal system and its connection to the anal siphon. An example of the oligopneustic condition.
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![[Image, dipt016b.gif]](http://biodidac.bio.uottawa.ca/thumbnails/images/dipt016b.gif)
dipt016b.gif
Diptera-
Spiracular gill on a black fly pupa.
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![[Image, dipt005b.gif]](http://biodidac.bio.uottawa.ca/thumbnails/images/dipt005b.gif)
dipt005b.cdr
Diptera-
Piercing mouthparts of the mosquito
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![[Image, dipt003b.gif]](http://biodidac.bio.uottawa.ca/thumbnails/images/dipt003b.gif)
dipt003b.cdr
Diptera-
Piercing mouthparts of the stable fly.
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