The genus Colobopsis is a group of ants known for their distinctively shaped heads, which are often flattened or truncated, particularly in soldier ants. This unique head morphology allows them to block the entrances to their nests, a behavior known as "phragmosis." Colobopsis ants are typically arboreal, meaning they live in trees, and are commonly found in forests, especially in tropical and subtropical regions. These ants tend to nest in hollow twigs, stems, or cavities within wood. They are generally small to medium-sized and can vary in color, often exhibiting shades of brown or black. Colobopsis ants are known for their complex social structures and cooperative behaviors within their colonies.