The Planted Tank Forum - View Single Post - new photos of a predaceous diving beetle
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post #3 of (permalink) Old 07-18-2012, 03:29 AM Thread Starter
Planted Member
Join Date: Aug 2010
Location: Vancouver, Canada
Posts: 177
Originally Posted by Jules View Post
That's awesome - I've never seen a picture that showed the air bubble like that. Nice job! It looks like a Rhantus sp. with that shoulder spot.
Thank you! I looked up Rhantus and it does look a lot like it. However, someone else suggested that they see a spike on the ventral surface running from the thorax to abdomen. And that therefore it is a scavenger beetle, family Hydrophilidae. I am no expert so I am a little confused now. I am going to try and get a good photo of the ventral surface and post it for comment...

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