Insects & arachnids

Elephant beetle

Megasoma elephas

A large dark brown elephant beetle with a curved horn and velvety body on a piece of wood

Photo: Jbjensen1 · CC BY 4.0 · via Wikimedia Commons

Where
Your garden, Coco town, Dry forest
When
Night, mostly in the green season
Size
Males up to 12 cm long including the horn
Should I worry
Enjoy it
Completely harmless. It cannot bite or sting. Pick it up gently and put it back on a tree.

You hear it before you see it, a heavy whirring, then a thump against the wall, and then there is a beetle the size of a small mango on the tiles looking dazed.

Where you’ll see it

Anywhere with a light on at night in the green season. They come out of the forest in the rains, fly heavily and clumsily, and end up on porches and pool decks across the coast.

What to know

The horn is the male’s and is used for wrestling other males. Neither sex can bite or sting. The body is covered in a fine yellowish down that gives it the velvet look. Adults feed on sap and rotting fruit and live only a few months, after years underground as a grub.

If one lands on the porch, let it be or set it on a tree. It will find its own way off once the light goes out.

Questions people ask about this one

What is the giant beetle on my porch?

Very likely an elephant beetle, one of the rhinoceros beetles. Males have the horn and can be the size of a fist. They fly to lights at night in the rainy months and are utterly harmless, if startling when they land.

Wondering what else is out there?

Ask me on the call. I'll tell you what actually shows up in a Coco garden, what to do about it, and the one guy everyone rings when there's a boa in the roof.

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