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Lately, my water delivery has begun any time from midnight to 5:30 A.M.  I drain the hot tub and remove about 1/3 of the water from the pool the day before as by then the water is cold.  It streams into my cistern to be used for watering the garden and spare lot/sculpture garden below (no water wasted) and the nearly boiling-hot thermal water from Colima vocano 80 miles away comes streaming into my pool and hot tub to cool down a bit so I can actually make use of it by evening or the next morning.

Today I got up at 5:30 when I heard it streaming in. By 8, I noticed the hot tub was full and running over into the pool and when I went down to turn off the water, I noticed dozens of tiny black ants swarming over the 2-foot wide surface of the edging around the pool. Unable to see the purpose for their swarming, I nonetheless was able to see that a number of wasps were also swooping down to the stone surround. Then I realized that the wasps were actually feeding on the ants!  I ran in to get my phone to take photos to document this surprising event, but alas, when I returned, only ants remained. No wasps.  I then returned to the house to try to find something on the internet to back up what I’d viewed and Meta Al informed me that:

Yes, some wasps eat small black ants, while others do not. Some wasps are predators that hunt and eat insects, including ants, which can be a protein source for their larvae. However, other species are either parasitoids that lay eggs inside ants, or they may attack ants defensively when competing for resources, rather than eating them. (Info derived from AI)