The family Phylloxeridae is a group of insects that includes the phylloxera, a pest that is well-known for its devastating effects on grapevines. This family also includes several other species of phylloxerids that feed on the roots and leaves of plants. There are several synonyms that can be used to refer to this group, including the family Phylloxerinae and the superfamily Phylloxeroidea. Additionally, some authors refer to the phylloxerids as vine lice or root lice, due to their feeding habits. Despite their small size, these insects can cause serious damage to crops and their control is an important issue in agriculture.