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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Ground Beetles (Carabidae) » Harpalinae » Harpalitae » Harpalini » Stenolophina » Acupalpus » subgenus Tachistodes (Acupalpus subgenus Tachistodes) » Acupalpus indistinctus
Photo#143216
furrowed pronotum carabid - Acupalpus indistinctus
Copyright © 2007 Tim Moyer

furrowed pronotum carabid - Acupalpus indistinctus
Medford, (~25 miles east of Philadelphia, PA) Burlington County, New Jersey, USA
June 11, 2007
Size: ~3.8mm
looked like just another small black ground beetle until under some magnification I saw the furrowed pronotum. Hopefully that should narrow it down a little.

came to UV light

Images of this individual: tag all
furrowed pronotum carabid - Acupalpus indistinctus furrowed pronotum carabid - Acupalpus indistinctus furrowed pronotum carabid - Acupalpus indistinctus furrowed pronotum carabid - Acupalpus indistinctus furrowed pronotum carabid - Acupalpus indistinctus
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Contributed by Tim Moyer on 5 September, 2007 - 12:32pm
Last updated 22 November, 2009 - 9:31am

Moved
Moved from Stenolophina.
… v belov, 22 November, 2009 - 9:31am login or register to post comments

what makes it look special,...
...is its wide head; large bulging eyes; and rather robust digging pro- & mesotibiae. i also suspect it to be but a melanistic variant of what you've had here:

Moved from Harpalini.
… v belov, 18 November, 2009 - 12:19am login or register to post comments

 
a working hypothesis: A. indistinctus Dej.
i hope i found this peculiar large popeyed head in D&A key couplet 8(3) -- what do you think, Tim and Peter?
… v belov, 22 November, 2009 - 7:26am login or register to post comments

 
vague couplet
After re-reading the description for A. indistinctus, I'd certainly agree with your determination on the "typical" looking one. Fits it to a T.

As for the key couplet, I personally can't see the diff between the head/eyes of indistinctus and the images we currently have for the other Acupalpus sp. Especially true for the images currently under A. testaceous. Am I misunderstanding the differance the couplet is trying to employ? Or did we put these in the wrong place?

Either way, seems like I need to watch these "smallish Harpalini" better, as certainly more than one species has been turning up in the backyard.

Thanks v, (and Peter)
Tim
… Tim Moyer, 22 November, 2009 - 8:14pm login or register to post comments

 
they do look different to me, honest...
but the name indistinctus may have been chosen for a reason, too...
… v belov, 23 November, 2009 - 2:44am login or register to post comments

Moved
Moved from Harpalinae.
… v belov, 28 March, 2009 - 5:48pm login or register to post comments

Moved
Moved from Ground Beetles. Agree with Boris, this is a Harpalinae.
… Brad Barnd, 30 September, 2007 - 10:26pm login or register to post comments

small Harpaline
?Brady*cellus/?Acu*palpus
… Boris Büche, 6 September, 2007 - 10:49am login or register to post comments

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