Intra-tree-distribution

Guides

• Ennomos subsignaria

  Elm Spanworm Moth

  Ennomos subsignaria is a geometrid moth native to North America, commonly known as the elm spanworm moth. Adults have a wingspan of 35–40 mm and fly from late May to August, with one generation per year. The species is a generalist herbivore whose larvae feed on elm, apple, birch, maple, and oak. Research has documented its clumped intra-tree distribution on mature sycamore maple, with oviposition concentrated on the lower bole and larval development progressing from proximal to distal branches of the lower crown.

  geometridaespanwormdefoliatorphenologypolyphagousnorth-americabroadleaf-forestsingle-generationoviposition-behaviorintra-tree-distribution