The aphid Myzus hemerocallis is endemic to East Asia and was detected in Europe for the first time in France in 1990. The first detection in Germany was in 2020. So far, the aphid is not listed in the Annexes of Regulation (EU) 2019/2072 or by EPPO.

Myzus hemerocallis infests Hemerocallis sp., Agapanthus sp. and Scilla madeirensis, which is endemic to Madeira. It is assumed that M. hemerocallis can establish in Germany, at least in warmer areas. Establishment in further EU-Member States has already taken place. Due to its damage potential for host plants which is comparable to a common aphid infestation and because it obviously does not transmit viruses, M. hemerocallis poses a low, in single cases medium phytosanitary risk for Germany. In southern EU Member States, it poses a medium phytosanitary risk because of the presumably more favourable climatic suitability.

 Based on this risk assessment, it is assumed that Myzus hemerocallis can establish in other Member States outdoors or in glasshouses. Severe damage might occur frequently and locally. The aphid can spread effectively by anemochory. Therefore, natural extension of the distribution area is likely. 

Myzus hemerocallis is not classified as a potential quarantine pest and Article 29 of Regulation (EU) 2016/2031 does not apply. It is recommended to carry out control measures in order to prevent further distribution.