Fenusa pusilla - small black sawfly native to Europe but established in eastern United States; larvae mine the leaves of birches causing serious defoliationbirch leaf minersawfly - insect whose female has a saw-like ovipositor for inserting eggs into the leaf or stem tissue of a host plant
Fenusa pusilla
noun
Synonyms for Fenusa pusilla
noun small black sawfly native to Europe but established in eastern United States
Fenusa pusilla - small black sawfly native to Europe but established in eastern United States; larvae mine the leaves of birches causing serious defoliation