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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Plate-thigh and Marsh Beetles (Scirtoidea) » Marsh Beetles (Scirtidae) » Prionocyphon » Prionocyphon limbata
Photo#141625
Marsh Beetle - Prionocyphon limbata
Copyright © 2007 tom murray

Marsh Beetle - Prionocyphon limbata
Groton, Middlesex County, Massachusetts, USA
August 3, 2007
Is this P. discoideus?
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Contributed by tom murray on 31 August, 2007 - 3:10pm
Last updated 13 February, 2008 - 10:24pm

Moved
Moved from Prionocyphon.
… tom murray, 13 February, 2008 - 10:24pm login or register to post comments

or another one
Downie and Arnett list 2 Prionocyphon for the northeast; P. disconideus and P. limbata (limbatus?) LeConte. A photo of the prosterum between the coxa is needed to separate, unless it's a male. P. discoideus males have biappendiculate antenna. P. limbatus have the "prosternum tip dilated to form a spearhead".
… Tim R. Moyer, 4 September, 2007 - 11:48am login or register to post comments

 
P. limbata (limbatus?)
Marshall's book (1) says the difference between discoideus and limbatus is the color of the antenna and the elytra. His pictures show a solid yellow antenna in discoideus, and a mostly dark antenna in limbatus.
Do you think that's good enough to move it to the species page?
… tom murray, 13 February, 2008 - 8:36pm login or register to post comments

 
sure,
that sounds good enough :)
… Tim R. Moyer, 13 February, 2008 - 8:58pm login or register to post comments

 
Next time
I'll turn it over and get a close-up of the prosternum.
… tom murray, 4 September, 2007 - 5:14pm login or register to post comments

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