We were not able to find much information about Megalonotus chiragra on the internet, except for the fact it loves light and sandy soils. In the Benelux countries it is quite common along the coast and inland on sand, but absent on clay and along the rivers. The funny part is, that only while photographing the little thing I discovered it had a very small animal on top of it. I know little to nothing about parasites to bugs, so I asked my friends of the Royal Entomological Society of Antwerp in Belgium about it. They informed me that only some species of mites are parasites to bugs. Their guess was that a plant louse accidentally landed on this Megalonotus chiragra's back and, due to the hairs on the bug, couldn't get loose.