A handful of soil usually contains more than thousand nematodes including plant parasites, fungal feeders, predators, omnivores and a number feeding on bacteria. One of the most remarkable species, feeding on bacteria, is Wilsonema otophorum: a small nematode, shorter than half a millimeter. This is known to be a cosmopolite, but the question remains whether records from other continents refer to the same species. Wilsonema, just as most of the other nematode species, has six lips. The dorsal and ventral lips are grown out to two feather-like structures which probably play a role in gathering food. Because of these remarkable lips, Wilsonema is easily recognized. It is a common species in sandy soils, even in the most acid sandy soils, and easily withstands dehydration.