This quick scan was prompted by the finding of Euwallacea similis in a commercial greenhouse during inspections and monitoring carried out as part of an eradication program against the related quarantine organism Euwallacea fornicatus sensu lato. E. similis is not known to be present in the EU. The organism can likely establish in parts of the southern EU. On living trees, it is considered a secondary pest that only attacks when the tree is stressed or weakened. E. similis is not known as an economic pest in its current area of distribution except from causing damage to stored timber in tropical regions. Therefore, damage caused by the species may be limited if it were to become introduced into the EU. The uncertainty of this assessment is high, mainly due to lack of information about the pathogenicity of the fungal symbionts it may be associated with.