Abstract
The water lily aphid is a cosmopolitan species that feeds on various plants. Its primary hosts are Prunus species from which they migrate to their secondary hosts – aquatic and semi-aquatic plants. So far, in Serbia, Rhopalosiphum nymphaeae is recorded to attack only three plant species as secondary hosts. In our study, conducted in September 2020, we have researched the association of water lily aphid with secondary hosts in wetland habitats. A total of 44 samples were collected from 16 localities. In addition to the plant species previously reported, in this study 11 secondary hosts are documented for the first time in Serbia. The most common trophic association of R. nymphaeae was with Salvinia natans which was registered in 13 localities. There is a high possibility of finding new records of secondary hosts, therefore, more research is needed to complete the information about the water lily aphid and its hosts in Serbia.
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