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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Whirligig Beetles (Gyrinidae) » Gyrininae » Gyrinus » subgenus Gyrinus (Gyrinus subgenus Gyrinus) » Gyrinus dubius
Photo#489173
Gyrinus - Gyrinus dubius
Copyright © 2011 Libby & Rick Avis

Gyrinus - Gyrinus dubius
Port Alberni, Vancouver Island, British Columbia, Canada
July 7, 2010

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Gyrinus - Gyrinus dubius Gyrinus - Gyrinus dubius Gyrinus - Gyrinus dubius Gyrinus - Gyrinus dubius
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Contributed by Libby & Rick Avis on 6 February, 2011 - 3:43pm
Last updated 9 February, 2011 - 5:14pm

Gyrinus dubius (Wallis)
It was a toss-up between G. dubius and G. picipes. Both species are found in BC. G. dubius has bicolored legs with protibia, hind and mid femora piceous (darkened) but the glare from the photos made it somewhat hard to discern. The overall shape of the aedeagus in the additional photos, however, fits G. dubius more than the other species...thanks for adding them!
… Tim Loh, 8 February, 2011 - 11:32am login or register to post comments

Male
Male genitalia usually required to get these to species.
… Tim Loh, 6 February, 2011 - 4:29pm login or register to post comments

 
but this is exactly the case where you can see them
… v belov, 6 February, 2011 - 7:03pm login or register to post comments

 
In this case
I would need a clear close-up shot of the region to get further (can't see enough detail)...although my money's on Gyrinus picipes (Aube) based on the overall color of the ventral surface and the general shape of the aedeagus. Provision of body size is also helpful for these guys.
… Tim Loh, 7 February, 2011 - 12:59am login or register to post comments

 
Thanks for all your help with these.
Tried blowing up the photo, but don't think it added much - see additional posts. Will remember to measure things this year.
… Libby & Rick Avis, 7 February, 2011 - 10:41pm login or register to post comments

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