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Photo#9070
Tumblebug - Canthon

Tumblebug - Canthon
Rockbridge County, Virginia, USA
It was May 6, 1985 and I was with a friend and his very young son when we saw this tumblebug with its ball. I quickly fired off a whole roll of film and started to load another. I was very excited, and they, well they were surprised I would take so many pictures. "Is it really that scarce?" they asked.

According to the books, no. But here I am nineteen years later and I have never seen another tumblebug. I sometimes walk in cow pastures to look for them but to no avail. Anyone have advice for how to find these supposedly common insects?

The field guides state that the male and female often tumble the ball along together, but I saw and photographed only the one beetle.

I'm parking the photo in Canthon, but would like to move it to species if we can ID it that far. I can provide enlarged photos of certain features if that would help.

So far the only guide page is the excellent one contributed by Patrick for C. vigilans.

Images of this individual: tag all
Canthon Enlarged - Canthon Tumblebug - Canthon

Canthon species--need close-ups of head
Scarab Beetles of South Carolina (1) has a pretty good key, which should cover stuff in Virginia, too.

First, if it is larger than 10 mm, I think that rules out a couple of similar genera, Pseudocanthon and Melanocanthon, which are smaller. Canthon is 10-20 mm.

Can you get a close-up of the head? The key is based on features of the head and pronotum.

Patrick Coin
Durham, North Carolina

 
Enlarged view of pronotum
Patrick, on going back to the negatives I didn't have the variety of poses I thought I did. The best I could manage was to enlarge this same photo for the head and pronotum, and have posted it here.

It was definitely a big beetle, considerably closer to 20 mm than to 10 mm I would say.

--Stephen

Stephen Cresswell
Buckhannon, WV
www.stephencresswell.com

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