Willow-associates
Guides
Nematinae
nematine sawflies
Nematinae is a large subfamily of sawflies (Hymenoptera: Tenthredinidae) comprising over 1,250 described species across approximately 40 genera. The subfamily exhibits a reversed latitudinal diversity gradient, with species richness peaking in boreal forest zones rather than tropical regions, likely associated with the abundance of willow (Salix) hosts. Nematinae display diverse feeding strategies including external leaf feeding, leaf mining, and gall induction, with larvae utilizing over 20 plant families.