Nasutitermes costalis, a tropical termite, makes its nuptial flight the night of the first strong rain of May. This is in the Rio Abajo Forest, Arecibo

In the Rio Abajo forest, in Arecibo, Puerto Rico, the termite Nasutermes costatus is very common.  It makes its nuptial flight, when the males and females emerge from the nest to found new colonies, during the month of May.  The reproductives come out after the first strong rain of May.  It has to rain at least an inch of precipitation for the termites to come out in numbers.  If it rains less than an inch, few or none may come out.  The number of reproductives vary from year to year, this is a nuptial flight in 2013, in 2015 their number was much more modest.

This coqui ate so many flying termites that he could not eat any more

Today, the Rio Abajo Forest, in Puerto Rico, we had the first really good rain of the rainy season.  More than an inch of rain fell on the forest.  I knew that this would stimulate the local termites into making their nuptial flight.  I turned off all the lights in the house and left only the light of the terrace on.   I sat by the light and waited.  Al 7:30 pm the first termites showed up.  This coqui, which was hiding in a bromeliad near my terrace, quickly jumped near the light and started feasting on the termites.  It ate so many of them that it got to the point that it could not eat any more.  I scooped him up with my finger to take a photo.  I was surprisingly docile considering that normally they don't allow themselves to be picked up.  It stayed on my finger for a few moments and then jumped on the camera.  I gently put him into a bromeliad leaf.