Vespidae; Unidentified Polistinae. My wife spotted these wasps building a nest this morning when she was doing her rounds, checking her plants. When she pointed it out to me, I knew immediately that the wasps must belong to the Polistinae Subfamily because the nest is a paper nest. I could also see that the nest was not the umbrella type and that tells me that these wasps are not Polistes stigma which are fairly common in this area. So, just by looking at the nest I know that I will have to call these wasps Unidentified Polistinae. I am tempted to call them Polistes sp. but I will need a little more time to find some reference material to verify that.
Important discovery. It is distinguished from other Mediterranean limpets by its large and strong shell and by the thick and high ribs that it presents, which determine that the edge is very sinuous. The ribs are usually nodular and somewhat irregular, although the surface of the shell may often be eroded with epibiont organisms such as barnacles and algae present, changing its appearance.