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  3. Frankliniella occidentalis

Frankliniella occidentalis

Basic information
Scientific name Frankliniella occidentalis (No picture)
Common names Western flower thrips
Higher taxon Thripidae, Thysanoptera, Insecta
Natural range Western North America (Canada to Mexico)
Habitat Parasite on various plants.
Invasion information
Range in Japan Almost entire Japan. In Okinawa, this species was extinct, although there was a temporarily established population. Range in Japan
Origin Unknown.
Date The first record in Japan was in 1990 at Saitama and Chiba Prefs.
Route Unknown.
Impact Damages on native plants and agriculture by predation of crops and carrying viruses.
Native organism(s) affected: Various plants including crops.
Regulation in Japan Thripidae thrips are assigned as Quarantine Pest (the Plant Protection law)
Introduced range in other countries South Korea, Oceania, South Africa, Israel, Europe, entire North America, and Latin America.
Reference Notes
  • Ecol Soc Jpn (ed) (2002) Handbook of Alien Species in Japan. Chijinshokan, Tokyo (in Jpn)
  • Hayase & Fukuda (1991) Occurrence of the western flower thrips, Frankliniella occidentalis (Pergande), on the Cyclamen and its identification. Plant Protection. 45, 59-61 (in Jpn)
  • Hill (1994) Western Flower Thrips. IHD, Knoxfield, Victoria.
  • Katayama (1998) Occurrence and control of western flower thrips, Frankliniella occidentalis (Pergande) on vegetables and ornamentals. Plant Protection. 52, 176-179 (in Jpn)
  • Kohama & Takahara (2002) Exotic insects in Okinawa. Bull Okinawa Pref Mus. 28, 55-92 (in Jpn)
  • Mound & Gillespie (1997) Identification Guide to Thrips associated with crops in Australia. NSW Agriculture, Orange NSW.
  • Plant Protection Station (2011) The Plant Protection Act. Quarantine Pest List. (Accessed on 2012-3-13) (in Jpn)
  • etc.
100 of the Japan’s Worst Invasive Alien Species.

In Okinawajima Is., this species was found in Jun 1999 at Nago City, but eradicated within two months.