Fauna
Insect

Fall Webworm Moth

Hyphantria cunea

Also known as Fall Webworm

Fall webworm moths are delicate white insects whose larvae weave conspicuous silk tents around outer branch tips of deciduous trees in late summer and autumn. Unlike tent caterpillars that build nests in tree crotches, these caterpillars envelop entire clusters of foliage within protective webbing to feed safely inside. Adults emerge in spring and summer, displaying silky white wings that range from immaculate pure white to heavily speckled with dark brown spots.

NocturnalSilk WeaverMoth
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyHardwood Leaves, Nut Tree Foliage, Fruit Tree Leaves
Predators
  • Songbirds
  • Parasitoid Wasps
  • Paper Wasps
ThreatsParasitoid wasps, predatory stink bugs, birds, and fungal pathogens
HabitatsDeciduous forests, orchards, suburban landscapes, and riverbanks
Life span1–2 weeks as adults; up to 1 year total life cycle
  1. OrderLepidoptera
  2. FamilyErebidae
  3. GenusHyphantria
  4. SpeciesHyphantria cunea
Range data is not available yet.
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Spotting Webs: Look for large silk webs enclosing leaf clusters on branch tips in late summer.
  • Night Observing: Adults fly at night and are frequently attracted to artificial lights and blacklights.
  • Nest ID: Distinguish from tent caterpillars by noticing webs at branch ends rather than tree forks.
Keep collecting in Fauna

Found in Collections

Species set

Moonlight Marvels

Fall Webworm Moth is found in this collection. Identify it in Fauna to fill this slot and continue your progress.

—/7
Continue in the app
Help improve the field guideSomething wrong?

Report a name, category, or profile issue for review.

Checking your Fauna account…