Battleship-shaped Ootheca

31mm long | July 6, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil

I saw quite a few of these oddly shaped things. My guess would be that they are the oothecae (egg masses) of a praying mantis. I’ve read that each species of praying mantis has a distinctive looking ootheca. After quite a bit of searching, I’ve been unable to find one that looks quite like this.

This one was on some sort of succulent plant, but I found others on tree trunks and various other plants.

Another view

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