Hyphantria cunea (Drury, 1773)

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English Fall webworm Status LU: uncertain. 1st record: 2014.
Lëtzebuergesch Amerikanesch Wiewermatt Status Eur.: established.
Français Chenille à tente estivale RA: ISEIA: B1, Watch List. Harmonia+: n/a.
Deutsch Amerikanischer Webebär Wikipedia: Wikipedia - English - Fall webworm Wikipedia - Français - Chenille à tente estivale Wikipedia - Deutsch - Amerikanischer Webebär Nederlands | Wikispecies: Wikispecies - Hyphantria cunea | CABI
Nederlands n/a (2020) Back to the list of invertebrates

Report the species

Report Hyphantria cunea to the National Museum of Natural History.

Brief description

Hyphantria cunea P1240435aHyphantria cunea (Drury, 1773), native to North America, is a moth in the family Erebidae known principally for its larval stage, which creates the characteristic webbed nests on the tree limbs of a wide variety of hardwoods in the late summer and fall. It is considered a pest but although unsightly, does not harm otherwise healthy trees. It is well known to commercial tree services and arboriculturists. The adult fall webworm has a wingspan of approximately 30 mm and is generally white-colored, although some individuals may have dark-colored marks (Wikipedia contributors 2020).

Status and distribution in Luxembourg

So far, Hyphantria cunea (Drury, 1773) has been documented only once, in 2014 in the Kirchberg district in Luxembourg City (Source ?).

There is no distribution map available because no data has been entered into the Recorder-Lux database so far (MNHNL, iNaturalist & GBIF 2020).

Risk assessment

ISEIA protocol

B1 (3+3+1+2) = Watch List (Ries et al. 2017: 68).

Harmonia+ protocol

Overall risk score 0,13 = (Overall Invasion score 0,49 x Overall Impact score 0,27) (evaluated by Jennifer Cross, Svenja Christian and Roland Proess).


Worldwide distribution


  • CABI, 2019. Hyphantria cunea (Drury, 1773). In: Invasive Species Compendium. Wallingford, UK: CAB International. URL: www.cabi.org/isc [accessed 2020-04-06]
  • MNHNL, iNaturalist & GBIF, 2020. Hyphantria cunea (Drury, 1773) in MNHNL-mdata, online portal combining species observation from Recorder-Lux, iNaturalist and GBIF. National Museum of Natural History, Luxembourg. URL: https://mdata.mnhn.lu [accessed 2020-04-09]
  • Ries, C., A. Arendt, C. Braunert, S. Christian, A. Dohet, A. Frantz, G. Geimer, M. Hellers, J. A. Massard, X. Mestdagh, R. Proess, N. Schneider & M. Pfeiffenschneider, 2017. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of invertebrates in Luxembourg. Bull. Soc. Nat. luxemb. 119: 63-70. [PDF 360 KB]
  • Wikipedia contributors, 2020. ‘Fall webworm’, Wikipedia, The Free Encyclopedia, 13 March 2020, 14:32 UTC, https://en.wikipedia.org/w/index.php?title=Fall_webworm&oldid=945368504 [accessed 2020-04-09]

 Page content last updated on 2024-03-06. Last proofread by Caroline Grounds on 2019-12-10.