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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

As you unwrap a Halloween candy or two, it's worth paying your respects to the real reason for many of the treats.

A tiny fly whose trick is to make chocolate possible.

They're all in the family, Ceratapagana Day, which are the biting midges family, but not all of the

adults bite. How we usually do it is we call them Sarats. Erica McAllister is a fly scientist at the

Natural History Museum of London and author of The Secret Life of Flies. The Cerrats, as she calls them,

related to noceums, do a job that's very hard to get done by hand.

They crawl through long, twisty cacao flowers pollinating the stubborn cacao tree,

which produces the beans used to make chocolate.

They are really, really difficult to pollinate.

Now, you do need these little things to do it.

And to McAllister, at least, the tiny midges are a beautiful sight to behold.

They look like a very tiny mosquito, but they are basically absolutely covered in hair.

They're very beautiful, very her suit, little organisms.

And the males have got the most, they look like feather dusty antennas, because he has to not only

smell for the female, he's listening, and his ears are on the antennae. They're not very

robust, these things. They're tiny, as their name applies. And they've got nice external

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