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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Predaceous Diving Beetles (Dytiscidae) » Colymbetinae
Photo#747210
Dytiscidae
Copyright © 2013 Andrew Hoffman

Dytiscidae
Splinter Ridge FWA, Jefferson County, Indiana, USA
February 24, 2013
These small "water tigers" were showing up infrequently in leaf packs under rocks. Can anyone verify the family and get it down to genus? (I know this one may be tricky)
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Contributed by Andrew Hoffman on 25 February, 2013 - 12:13pm
Last updated 13 January, 2014 - 10:32am

Moved
Moved from Predaceous Diving Beetles.
… v belov, 13 January, 2014 - 10:32am login or register to post comments

Dytiscidae
One of the Colymbetinae. Probably Agabus or Ilybius, but can't tell from this photo.
… Brady Richards, 25 February, 2013 - 3:51pm login or register to post comments

 
Thanks Brady! Are there any
Thanks Brady! Are there any angles/features that I could photograph that would help? And if not, where would the adults likely be (or what time of year)?
… Andrew Hoffman, 25 February, 2013 - 5:17pm login or register to post comments

 
Oops
Sorry, I forgot to reply to your questions. For this particular beetle, a close up of the side of the head and also a shot of the urogomphi (tails) would be of help. For the dytiscid larvae in general, there are a number of very small features on the palps and also the urogomphi that need to be seen. I think those characters are probably beyond the resolution of what you can do without a microscope.
… Brady Richards, 5 March, 2013 - 4:45pm login or register to post comments

 
Thanks Brady, that is very he
Thanks Brady, that is very helpful!
… Andrew Hoffman, 5 March, 2013 - 5:23pm login or register to post comments

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