👉 Leptosoma is a family of nematodes, commonly known as leeches or worms, that are found in various environments and play important roles in ecosystems. They are classified into two main groups based on their body size: the Leptosoma ocellata group consisting of small, round-bodied organisms, including leeches, while the Leptosoma fulva group contains larger, flattened forms such as snails.