👉 Crassicornella is a genus of nematodes that belongs to the family Nematoda, commonly known as earthworms or crickets. They are found in various parts of the world and can be found in soil, water, vegetation, and even on rocks. Crassicornellidae are characterized by their small size, which is typically less than 1 millimeter long, and a distinctive black coloration that distinguishes them from other nematodes.