Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#149600
Wrack-heap soil centipede - Arenophilus bipuncticeps

Wrack-heap soil centipede - Arenophilus bipuncticeps
Odiorne State Park, Rockingham County, New Hampshire, USA
September 22, 2007
Size: didn't measure
This image is a straggler that I missed when I PhotoShopped the first batch.

Images of this individual: tag all
Wrack-heap soil centipede - Arenophilus bipuncticeps Wrack-heap soil centipede - Arenophilus bipuncticeps Wrack-heap soil centipede - Arenophilus bipuncticeps Wrack-heap soil centipede - Arenophilus bipuncticeps Wrack-heap soil centipede - Arenophilus bipuncticeps

Moved

Moved
Moved from Geophilus.

Moved
Moved from Soil Centipedes.

Geophilus sp.
Based mostly on leg count and the fact that the prehensors (not including the black fang portion) don't extend beyond the front margin of the head. I suspect this is G. cayugae, as it looks a lot like specimens I've seen before, but unfortunately I cannot say for sure.

 
WRONG - Arenophilus bipuncticeps
I've been examining specimens like this from the UConn collection tossing around ideas ... turns out they are Arenophilus bipuncticeps, closely related to Geophilus. Sorry for the confusion!

The best way to distinguish this species from others in the family Geophilidae is the tuberculate tarsal claws on the last pair of legs (meaning, the "claw" is really just a bump). But the bumpy interior margin of the forcipules (the appendages containing the fangs) is also a good indicator.

 
Thanks for all the hard work on these pics, Joseph.
I'm now living and collection (for a museum) in eastern Ecuador and have seen quite a few Geophilidae. Though my focus now (as then) is on Coleoptera I am likely to shoot some one of these days.

 
No problem!
And I'd love to see some geophilomorphs from Ecuador! Thanks for going to the trouble to take the close-ups and ventral view, they were all essential to IDing this species.

I'm not yet familiar with South American geophilomorphs but if you can get close-ups like you did for this one, I have a key I'd love to try out. Would they let you post those on this site? If not you can always shoot me an e-mail.

 
Yes, I could post them here
but they'd be frassed and only have a 30-day shelf. Better to email.