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Fullgrown Dytiscus larva
Dytiscus marginalis
Great diving beetle larva, last stage

This really is a full grown larva: it's so fat and heavy it's not able to float beneath the water surface anymore and can only in shallow water it's able to get the tail tip to the surface to get some air. At this stage there's some danger of drowning when in an aquarium. It does not eat anymore and soon will crawl out of the water to dig a little pupation hole in the banks near the water where it will pupate to become the adult beetle. I tried to persuade him to do this in a terrarium outdoors, but it had its own ideas about things and managed to escape. A few weeks later we sitting outside at night a Great diving beetle flew with a clang against our oil lamp . Who knows, could be this specimen. It flew away and we did not see it again.


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COPYRIGHT:
All pictures on this site were made by Gerard Visser (Almelo, Netherlands), unless stated otherwise. All rights remain with him. These pictures may not be used for purposes any other than private viewing or printing. Do NOT hardlink to these pictures or place them on other websites without the author's approval. Should you need them for purposes which include third parties, you must ask the author permission by e-mail. People, who want to use this pictures for exhibitions or publications or educative material are much encouraged to do so, after approval as mentioned and giving the normal credits.
© G.H. Visser 11-04-2004
rev 07-07-2008

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