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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Scarabaeoidea » Scarab Beetles (Scarabaeidae) » Aphodiine Dung Beetles (Aphodiinae) » Aphodiini » Teuchestes » Teuchestes fossor
Photo#2031105
Aphodiinae on a snowpack - Teuchestes fossor
Copyright © 2021 Chloe and Trevor Van Loon

Aphodiinae on a snowpack - Teuchestes fossor
Near Big Creek Provincial Park, Cariboo, British Columbia, Canada
July 5, 2021
Size: 10mm
Found on a snowpack

Images of this individual: tag all
Aphodiinae on a snowpack - Teuchestes fossor Aphodiinae on a snowpack - Teuchestes fossor Aphodiinae on a snowpack - Teuchestes fossor Aphodiinae on a snowpack - Teuchestes fossor Aphodiinae on a snowpack - Teuchestes fossor
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Contributed by Chloe and Trevor Van Loon on 29 August, 2021 - 6:42pm

Moved tentatively, should be easy to key out
Moved from Aphodiine Dung Beetles.
… v belov, 29 August, 2021 - 6:57pm login or register to post comments

 
Thanks v.!
Problem is the Arnett key still has the old names - like Didactylia. I think the articulation of the basal tarsomere relative to the tibial spurs isn't consistent with photos of Teuchestes fossor I've seen: e.g. https://bugguide.net/node/view/855822/bgimage. Will keep digging and maybe try to find a more modern key :)
… Chloe and Trevor Van Loon, 29 August, 2021 - 7:30pm login or register to post comments

 
I think Diapterna may be a better fit
Following the key in http://unsm-ento.unl.edu/Guide/Scarabaeoidea/Scarabaeidae/Aphodiinae/AphodiinaeTribes/Aphodiini/Key/AphodiiniK.html, among genera w/ large scutellae. I suppose D. omissa, D. pinguella, D. hamata are the options here based on range.

Teuchestes should not have that puntation on the pronotum, according to this key.

Perhaps D. omissa based on https://www.zoology.ubc.ca/entomology/main/Coleoptera/Scarabaeidae/Diapterna.php.
… Chloe and Trevor Van Loon, 29 August, 2021 - 7:47pm login or register to post comments

 
may be, but in Diapterna, scutellum looks much narrower, wedgy--
--at least to my eye
try this key
i find it more user-friendly
… v belov, 29 August, 2021 - 8:18pm login or register to post comments

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