I was not looking for anything in particular...... just outside my windowsill where I have kept my three flower pots with bonsai (in the making), ginkgo biloba, fig and wisteria. I was attracted by a sudden movement at the base of the gingko biloba sappling and what I saw was something the least expected.... a potter wasp had just landed and it was dragging a caterpillar.
Wonder of wonders...... it had dug a neat hole at the farthest extent of the flower pot and I had no clue of its labor of love. It took all the time it wanted to clean up the larva, at least that is what it appeared to me. The wasp would sting the larva again and again as it it was injecting some fluid inside the larva in preparation of the diet for its baby. Finally it appeared satisfied and dragged the still wriggling caterpillar down inside the dark chamber.
Internet does not talk about potter wasps who live underground. The ones I had written about earlier had made pots of the regular shape and size and the wasps were themselves as close relatives of paper wasps.
My wasp today is of iridescent blue black color and half the size of its cousins reported earlier.
With due apology to the poet: "Men may come and men may go, the potter wasps go on for ever".