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Black Diving Beetle (Predacious Diving beetle)

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PREDACIOUS DIVING BEETLE
by: Moni

Nancy
they are found thru out North America...so like many insects they are there we just have to happen to see them at the right time :-)

More of the Black Diving Bettles in Owen Sound
by: Nancy

Thank you for your identification! I met one of these guys in the garage last night and two more in the yard today. Having lived at Balmy Beach since 1991 and never having seen one before, I will be looking for more information about them including whether they are native (and have been unnoticed) or are they new to the area.
Thanks again.

Predacious Diving beetle
by: Moni

Sharon
You are correct! The beetle is a predacious diving beetle. They do look much like the giant water scavenger beetles in size and shape, however the diving beetles have the yellowish band along the sides that the scavenger beetle does not.
The adults and larvae eat aquatic insects, young fish, mosquito larvae, and sometimes tadpoles. They do live in mostly ponds but are found in streams and rivers, swimming near the pond plants. So, perhaps you do want the fishing spider to get it!?!

THANKS LYN
by: Anonymous

I had to sneak 'the wee fellow" down to the river bank when my cats were looking the other way !! Also out of any danger of more grass cutting to-day! My first thought was I wonder what happens when he meets Charolette, the fishing spider. Who would win that battle !? I had many Charolettes last summer. I was not impressed !

Water Scavenger Beetle
by: Lin

They are usually found in ponds, shallow lakes and along the shoreline of flowing water, although one subfamily is found in dung. They feed on decaying organic matter. Although some feed on plants. The beetles are not pests but the large species may be noticed.


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