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Great Diving Beetle Larva

PatBranch

Turbo Monkey
Sep 24, 2004
10,451
9
wine country
video: http://www.arkive.org/species/ARK/fish/Cottus_gobio/Cottus_gobio_11.html

Larva

Great Diving Beetle larvae are the young stage of a large water beetle.

They live in freshwater ponds and are fierce carnivores.

The large, pointed, sickle-shaped jaws are sunk into the prey like hypodermic needles. Digestive enzymes are pumped into the body of the prey and the resulting 'soup' is sucked back up.

Great Diving Beetle larvae will eat anything they can catch. Their favourite prey includes tadpoles and any other insects within reach. They are also cannibalistic and will eat other Great Diving Beetle larvae. Large larvae in the final stage before pupation, are of sufficient size to even catch and eat small fish.

The larvae often appear scorpion-like in the water because they move about with their tails extended vertically upwards. They will frequently push the tail up through the water surface to take in atmospheric oxygen through the terminal spiracle (air-hole). More...
These are in my friend's pond at his ranch in SLO... :twitch: They make such a gnarly screech.
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
21,624
6,814
borcester rhymes
a compadre of mine caught one of those with bare feet on a science expedition once...by accident. We put it in a small bowl for observation with two minnows...it ate one...the other disappeared as well a while later. It bit the dang thing right in half.

w00dy's former landlord's pool was crawling with those things. Yes, his pool. He had a small 6x12 foot pool which he didn't maintain, and it turned into a pond...which f.cking predatious diving beetles in it.