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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Leaf Beetles (Chrysomelidae) » Aquatic Leaf Beetles (Donaciinae) » Plateumarini » Plateumaris
Photo#45639
Iridescent Reddish Beetle - Plateumaris
Copyright © 2006 Peter Hollinger

Iridescent Reddish Beetle - Plateumaris
Sharon, Windsor County, Vermont, USA
June 12, 2005
On a cattail beside pond. I haven't been able to find anything similar.

Images of this individual: tag all
Iridescent Reddish Beetle - Plateumaris Iridescent Reddish Beetle - Plateumaris
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Contributed by Peter Hollinger on 23 March, 2006 - 9:20pm
Last updated 20 December, 2006 - 5:40pm

Moved
Moved from Aquatic Leaf Beetles.
… Jim McClarin, 20 December, 2006 - 5:40pm login or register to post comments

This is a typical Plateumaris
- body rather stout and very shiny, legs robust.
… Boris Büche, 20 December, 2006 - 6:54am login or register to post comments

 
The elytral suture widens toward apex,
or so it appears. It would be nice to have a full dorsal view to be sure, but I think these pix are moveable.
… Jim McClarin, 20 December, 2006 - 5:38pm login or register to post comments

images moved
to subfamily page, as per previous comments re: Donacia vs. Plateumaris
… Robin McLeod, 11 April, 2006 - 12:48pm login or register to post comments

Donacia
Both the overall appearance and the habitat where you found it suggest genus Donacia.

--Stephen

Stephen Cresswell
Buckhannon, WV
www.stephencresswell.com
… Stephen_WV, 24 March, 2006 - 4:02am login or register to post comments

 
Ditto
Donacia have metallic hues and square shoulders like this.
… Jim McClarin, 24 March, 2006 - 4:47am login or register to post comments

 
Not so sure:-)
The subfamily would definitely be correct: Donaciinae. However, I think Donacia has been split. I just keyed out some beetles I 'thought' were Donacia, and they turned out to be in the related genus Plateumaris. The only way you can tell is by the elytral suture. In Plateumaris it is expanded at the posterior end. Pretty hard to detect without a microscope. I used the 'new' "American Beetles" manuals by Arnett to key them.
… Eric R. Eaton, 24 March, 2006 - 12:48pm login or register to post comments

 
I agree
...that this one should be moved to the subfamily page until someone is able to sort these out. So far, the unfounded assumption at BugGuide has been that every Donaciinae is a Donacia, but based on species diversity alone, about one third of the images currently on the genus page could very well be Plateumaris species. See comments here.
… Robin McLeod, 24 March, 2006 - 6:39pm login or register to post comments

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