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Large MT Scarab - Osmoderma subplanata

Large MT Scarab - Osmoderma subplanata
Missoula, Missoula County, Montana, USA
July 30, 2014
Size: 29mm
Resembles Osmoderma, but seems to be well outside the range for that genus. Found just before dusk on a footbridge in downtown Missoula. Specimen collected.

Images of this individual: tag all
Large MT Scarab - Osmoderma subplanata Large MT Scarab - Osmoderma subplanata Large MT Scarab - Osmoderma subplanata

Moved from ID Request.

I'm thinking...
I'm thinking something in the Genus Osmoderma...

I would concur, however, isn'
I would concur, however, isn't this quite a bit far west for the genus? Missoula County is practically Idaho which is practically Washington. I'm just very hesitant.

Wickham, 1920
In 1920, Henry Frederick Wickham records an Osmoderma montana, AKA Osmoderma subplanatum.

I'm figuring he found it in Montana.

Whatever the case, your beetle sure looks like an Osmoderma.

Give it the smell test: Does it smell like leather?

I'm pretty sure it does.

Yup, this is a first on Bugguide for Montana, but not a first for the entomological community.


P.S. - I'm hesitant to call this an O. subplanata, it looks more like an Osmoderma eremicola to me, but I'll leave it to the community to decide.

distribution of Osmoderma subplanata
According to Howden (1968), O. subplanata occurs west through MT into southern Alberta.

"practically Idaho which is practically Washington"--a lot of habitat in all those practicallys.

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