Definition
The term 'genus-fenusa' specifically refers to sawflies classified under the genus *Fenusa*. These insects are known for their leaf-mining larvae, which tunnel through the inner tissues of leaves. They belong to the family Tenthredinidae and are often associated with trees like birch and alder. Identifying sawflies by their genus helps in understanding their specific behaviors and ecological roles. Think of 'genus-fenusa' as a precise label for a group of plant-munching insects. ๐ฟ