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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Ground and Water Beetles (Adephaga) » Predaceous Diving Beetles (Dytiscidae) » Dysticinae (Dytiscinae)
Photo#14592
female predacious diving beetle
Copyright © 2004 tom murray

female predacious diving beetle
Harvard, Worcester County, Massachusetts, USA
April 16, 2004
Size: 1.25"-1.5"
This one showed up at night in the shadows at the edge of the porch light. It was very large, almost 1.5".
Contributed by tom murray on 8 April, 2005 - 10:21pm
Last updated 8 February, 2009 - 1:26am

Moved
Moved from Predacious Diving Beetles.
… Tim Loh, 8 February, 2009 - 1:26am

Dytiscus or Cybister, maybe
I think the real large ones are Dytischus or Cybister. It helps to get a photo of the ventral surface--the dorsal is smooth and similar in most aquatics, at least to my eye. I've been trying to puzzle these out, and will have a well-documented Cybister posted soon.

Patrick Coin
Durham, North Carolina
… Cotinis, 9 April, 2005 - 9:58pm

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