This gigantic species of coccinellidae+munz originate in eastern Switzerland and is easily identified by its hollow body filled with offspring. This way of carrying their litter has been noted to be very harmful for the young with easy access for eager predators.
Don't expect this family of ladybirds to help control unwanted agricultural pests in your garden, as they are prone to attract insects instead of deter them.
But don't worry I scooped them up and brought them into the house where they 'maybe' safe for a little while longer.