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Photo#39696
Osmoderma sp. larva - Osmoderma

Osmoderma sp. larva - Osmoderma
Toronto, Ontario, Canada
October 15, 2005
Dr Bruce D. Gill of the www.inspection.gc.ca thinks that, if he is not mistaken, this larva is very likely Osmoderma eremicola or Osmoderma scabra, they are common in the Toronto area.
The fecal pellets of these Trichiine larvae are shaped like miniature chiclets (a type of chewing gum), clearly visible in the photo.
Now we need a kind soul to add the Subfamily Trichiinae to the Taxonomy page here and remove this Genus, and perhaps others from the Cetoniinae into the Trichiinae, please.
I've learned quite a bit while trying to get an ID for this interesting larva. Apparently both Osmosderma eremicola and Osmoderma eremita, an Old World species, smell of Russian leather, which has been discussed here.
What is the smell of Osmoderma scabra?

Images of this individual: tag all
Scarab larva? - Osmoderma Scarab larva - Osmoderma Osmoderma sp. larva - Osmoderma

all three images now linked
and on the same guide page. Great detective work!

Older status
Nice shot, probably right - not many large "Scarabs" in Canada.

Bugguide is using American Beetles(1)(2) (for the most part) as the taxonomic standard. The once commonly used subfamilies Trichiinae and Valginae are treated as tribes of Cetoniinae there - typical useage overseas for many years. Additionally, many of the subfamilies used in the older NA literature - Geotrupinae for instance, have been elevated to family rank. Some of these changes are still controversial.

 
Phillip
have you followed the discussion in the forums here? Your advice to Tom would be very helpful.

 
Trichiinae a tribe of Cetoniinae
Thanks Philip for your taxonomic explanation. Unfortunately I haven't got American Beetles, wish I had, so my original comments were based on this German site where the Scarabaeidae are subdivided in 13 subfamilies, and the Trichiinae is one of them. Since I know only one Cetoniinae larva, Cetonia aurata, which crawls on its back, and this one didn't show that type of behaviour, it made a lot of sense to me that my larva should belong somewhere else. I know very, very little taxonomy but understand that things are always being moved around... Apologies for sounding so sure of myself.
Also thanks for your comments about the shot. I have posted, a while ago, 2 photos of the same larva, alas I haven't been able to tag them ;-( They are here and here. Could you please tag them for me? Then I will remove this paragraph.

 
tagging the images
John and Jane, thanks a lot for putting them together ;-)
This larva showed great character so I was determined to find out a bit more about it. My detective work was mostly trough the Entomo-L Mailing List and it has paid off ;-)

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