This Regulation sets out measures to prevent the establishment and spread within the Union territory of Pomacea (Perry) and measures for its eradication. It lays down rules on annual risk-based surveys for the presence of the specified pest of Union territory; establishment of demarcated areas where the presence of the specified pest is officially confirmed; derogation from establishing demarcated areas; eradication measures; annual surveys in demarcated areas; the conditions for lifting demarcation; and reporting obligations.