👉 Colomastigida is a type of parasitic nematode found in soil, grasses, and plants, causing infections that can be severe and even lethal if left untreated. They feed on host cells, which are typically red blood cells or erythrocytes. The term "colomastigida" refers to the parasites themselves, as they are not typically seen as a single organism but rather a group of parasitic nematodes.