Mystery Exuvia

January 20, 2011 | Armonia Nature Preserve, Limon Province, Costa Rica

What do you make of this exuvia? I found it just like this, sticking out of a large downed tree spanning a small creek.

Not sure if you can tell, but there’s a few small horns on the side and then one larger forked horn extending out from the bottom. Whatever left it squeezed out through a split on the top.

It measured 10mm in diameter, and there’s about 18mm extended out of the tree. I carefully pulled the rest out, and it measured 45mm long overall.

The whole thing

Even the rear end is somewhat bizarre looking.

Rear end

Ever seen anything like it? Any guesses as to what left it? A beetle perhaps?

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