Crunchy local delicacy

A couple of times during the rainy season the place becomes over-run with these flying creatures. They look like ants, but with larger and more elongated abdomens, and they have 4 clumsy wings which they use to flap about in a haphazard manner. In the space of only a couple of hours, these insects swarm in, flap around the light-shades and drop their wings. Here's the little critters in action: 

Here's a bunch of the wings, sadly discarded:

Our IT Officer tells me that if you head down to the market at the right time of year, you can buy these insects in deep-fried salted form. He informs be that they're 'crunchy and delicious'.