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Photo#37381
A beetle out of water - Cybister fimbriolatus - male

A beetle out of water - Cybister fimbriolatus - Male
Martin County, Florida, USA
November 10, 2005
I found this guy at the bottom of a stairwell nowhere near fresh water. My guess is they can fly and are attracted to lights at night. This foul beetle had a dead fish smell and it bit me when I let crawl on my hand. This is the first large water beetle I have seen in this area, but the giant water bugs are a dime a dozen.

Images of this individual: tag all
A beetle out of water - Cybister fimbriolatus - male A beetle out of water - Cybister fimbriolatus A beetle out of water - Cybister fimbriolatus

Big diving beetle.
This is a large predaceous diving beetle in the family Dytiscidae. The genus may be Cybister or Dytiscus, and it is a male, evidenced by the dilated (expanded) front tarsi ("feet"). Great images!

 
Thanks
for letting me know. Exactly what does the male do with his expanded tarsi?

 
Holds the female during copulation.
At least that's what one group of large water beetles does with its tarsi, which form suction cups by which to maintain a grip on the female's smooth surface

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