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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Ground Beetles (Carabidae) » Harpalinae » Pterostichitae » Woodland Ground Beetles (Pterostichini) » Pterostichus » Subgenus Hypherpes (Pterostichus Subgenus Hypherpes) » adoxus group (Pterostichus adoxus group) » Pterostichus tristis
Photo#183512
Ground Beetle - Pterostichus tristis
Copyright © 2008 tom murray

Ground Beetle - Pterostichus tristis
Groton, Middlesex County, Massachusetts, USA
May 18, 2008
Size: 12mm
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Contributed by tom murray on 18 May, 2008 - 7:17pm
Last updated 25 May, 2008 - 11:33pm

Thanks Peter
I got a few more Carabids today, including a few Galerita.
… tom murray, 25 May, 2008 - 11:33pm login or register to post comments

Pterostichus tristis
based on my microscopic examination of this specimen. Helpful clues are: no setigerous punctures on dorsal elytra AND hind angle of pronotum sharp (vs duller in closely related P. adoxus). Thanks Tom.
… Peter W. Messer, 25 May, 2008 - 10:24pm login or register to post comments

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