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Hyphantria cunea

Basic information
Scientific name Hyphantria cunea

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Common names fall webworm
Higher taxon Arctiidae, Noctuoidea, Lepidoptera
Natural range North America.
Habitat In introduced region, road side and garden tree.
Invasion information
Range in Japan Wide area of Honshu (main land), parts of Shikoku and Kyushu, and Ogasawara (Bonin) Islands. Range in Japan
Origin USA
Date Just after W.W.II, recorded in Tokyo, and spread by 1970s. First record of Ogasawara Islands in 1994.
Route Accidental introduction (contamination with U.S. military transport).
Impact Predation against native species. harmful to forestry .
Native organism(s) affected: Cultivation tree species.
Regulation in Japan Family Arctiidae is desgnated as a Quarantine Pest (the Plant Protection Law).
Introduced range in other countries Europe, China, Korea.
Reference Notes
  • Gomi (1997) Geographic variation in critical photoperiod for diapause induction and its temperature dependence in Hyphantria cunea (Lepidoptera: Arctiidae). Oecologia 111: 160-165.
  • Murakami & Washitani (supervising) Ecol. Soc. Japan (ed) (2002) Handbook of Alien Species in Japan. Chijin-Shokan. (in Jpn)
  • Plant Protection Station (2011) The Plant Protection Act. Quarantine Pest List. (Accessed on 2012-6-15) (in Jpn)
  • etc.
100 of the Japan’s Worst Invasive Alien Species