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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Cucujoidea » Minute Clubbed Beetles (Monotomidae) » Rhizophagus » subgenus Rhizophagus (Rhizophagus subgenus Rhizophagus) » Rhizophagus dimidiatus
Photo#109571
Colydii*dae ? (no, Monotomidae) - Rhizophagus dimidiatus
Copyright © 2007 Jim McClarin

Colydii*dae ? (no, Monotomidae) - Rhizophagus dimidiatus
Jefferson Notch area, Coos County, New Hampshire, USA
May 12, 2007
Size: about 3.5 mm
I found a pair each of two species of slender little underbark beetles with very compact antennal clubs. This is the larger and more elongate of the two, and more handsome in my opinion due to the dark red humeral and apical markings of the elytra. They were right in there with the sa*p beetles on a couple of still-weeping stumps, one coniferous and one deciduous.

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Colydii*dae ? (no, Monotomidae) - Rhizophagus dimidiatus Colydii*dae ? (no, Monotomidae) - Rhizophagus dimidiatus Colydii*dae ? (no, Monotomidae) - Rhizophagus dimidiatus Colydii*dae ? (no, Monotmidae) - Rhizophagus dimidiatus Colydii*dae ? (no, Monotomidae) - Rhizophagus dimidiatus
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Contributed by Jim McClarin on 13 May, 2007 - 6:33pm
Last updated 15 November, 2008 - 10:41am

Since the markings are definitely different from R. say*i,
I conclude this is R. dimidiatus, the other orange-marked Rhizophagus. Moved from Rhizophagus.
… Jim McClarin, 15 November, 2008 - 10:41am login or register to post comments

R. dimidiatus ?
The red shoulder point Rhizophagus dimidiatus I think : or they are an other species with this color patern in NH ?
… Pierre-Marc Brousseau, 14 May, 2007 - 10:04am login or register to post comments

 
Dimidiatus
but probably not sayi there are two species with orange marks on dark elytra.
… Donald S. Chandler, 14 May, 2007 - 9:10pm login or register to post comments

 
I've got three for you, Don.
I had stuck one in with some other specimens.
… Jim McClarin, 15 May, 2007 - 6:06am login or register to post comments

 
Dimidiatus
is likely, but with sayi around I would prefer to check out the punctations.
… Donald S. Chandler, 14 May, 2007 - 9:10pm login or register to post comments

Moved
Moved from Root-eating Beetles.
… Jim McClarin, 13 May, 2007 - 9:28pm login or register to post comments

Well, this seems to be a new family for my personal list.
Moved from Beetles.
… Jim McClarin, 13 May, 2007 - 8:01pm login or register to post comments

Bothrideridae is my guess on
Bothrideridae is my guess on this one too.
… Joe, Entomologist (in training), 13 May, 2007 - 6:56pm login or register to post comments

 
None in New Hampshire.
How about Monotomidae? There are nine NH species in that family and their antennal clubs look like a match.
… Jim McClarin, 13 May, 2007 - 8:00pm login or register to post comments

 
Rhizophagus sp.
A different one. Save also.
… Donald S. Chandler, 13 May, 2007 - 9:12pm login or register to post comments

 
I'll save both spp. for you.
Thanks, Don.
… Jim McClarin, 14 May, 2007 - 5:37pm login or register to post comments

 
Of course,
and thanks.
… Jim McClarin, 13 May, 2007 - 9:31pm login or register to post comments

 
Agreed, I forgot to check tha
Agreed, I forgot to check that family... Rhizophagus perhaps? I can't see enough detail of the procoxae/antennal grooves to be 100%, it'd key to Phyconomus otherwise
… Joe, Entomologist (in training), 13 May, 2007 - 8:31pm login or register to post comments

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