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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Predaceous Diving Beetles (Dytiscidae) » Colymbetinae » Colymbetini » Colymbetes » Colymbetes sculptilis
Photo#505798
Predaceous Diving Beetle - Colymbetes sculptilis - male
Copyright © 2011 Stephen Luk

Predaceous Diving Beetle - Colymbetes sculptilis - Male
Guelph, Wellington, Ontario, Canada
April 14, 2011
Size: 17 mm
Found on a sidewalk.
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Contributed by Stephen Luk on 15 April, 2011 - 11:32am
Last updated 17 April, 2011 - 10:43am

C. sculptilis
I looked up Larson (2000) and I'm now pretty sure it's C. sculptilis based on distributional data. It's the only species of the complex that occurs that far east.
… Tim Loh, 17 April, 2011 - 10:43am login or register to post comments

 
Thanks Tim!
Aedeagal shot coming soon...
… Stephen Luk, 18 April, 2011 - 8:44am login or register to post comments

Moved
Moved from Predaceous Diving Beetles.
… Tim Loh, 15 April, 2011 - 2:24pm login or register to post comments

In the C. sculptilis complex
which includes C. exaratus, but if it is really 20 mm, then it might be C. sculptilis. The other species are somewhat smaller. However seeing the male aedeagus (shape and length) is really the best way to tell members of this difficult complex apart. If you have collected it, you can give it a shot and run it through the key in Larson (2000) or alternatively you can send it to me for ID.
… Tim Loh, 15 April, 2011 - 2:24pm login or register to post comments

male Colymbetes of sorts [exaratus?]
our guys will give you a name for him, i suppose
… v belov, 15 April, 2011 - 11:48am login or register to post comments

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