Amblyseius swirskii

Amblyseius swirskii predatory mite


Amblyseius swirskii is a very effective generalist predatory mite used to suppress immature thrips, two-spotted spider mites, cyclamen (or strawberry) mites (Phytonemus pallidus), broad mites (Polyphagotarsonemus latus), mites of the genus Schizotetranychus and whiteflies in ornamental, fruit and market garden crops.

Adults are pear-shaped, 0.5 mm long, with long legs. The eggs are round and transparent and measure 0.14 mm in diameter. These mites lay their eggs on leaf hairs (trichomes) and along the veins on the inner surface of leaves. The eggs hatch about 3 days later.

Like generalist insect predators A. Swirskii can maintain its population even when there are no more thrips on the plants and start working as soon as thrips reappear. A. swirskii is not susceptible to diapause it can be used throughout much of the season. A. Swirskii needs more heat than Neoseiulus cucumeris to complete its development. Used the predator mite when the temperature is above 25 °C (77 °F).


For the commercial market only.

Targeted crops

  • Market garden crops (tomato, cucumber, pepper, eggplant, bean etc.)
  • Ornemental plants (poinsettia, gerbera, chrysanthemun, rose, etc.)
  • Small fruits (strawberry, raspberry)
  • Indoor plants

Targeted pests

  • Onion thrips (Thrips tabaci)
  • Western flower thrips (Frankliniella occidentalis)
  • Eastern flower thrips (Frankliniella tritici)
  • Echinothrips (Echinothrips sp.)
  • Broad mite (Polyphagotarsonemus latus)
  • Two-spotted spider mite (Tetranychus urticae)
  • Tomato Russet Mite (Aculops lycopersici)
  • Whiteflies (Trialeurodes vaporariorum, Bemisia tabaci and B. argentifolii)

Life cycle

  • Amblyseius swirskii has a life cycle of 7 days at 25 °C
  • Optimal conditions are 25 °C to 28 °C (77-83 °F) with 70% relative humidity.
  • Females lay 2 eggs per day.
  • Do not enter diapause
  • Do not use below 20°C (58 °F). Use Neoseiulus cucumeris.
  • Becomes inactive below 15 °C (59 °F)



  • 100-1702 - Amblyseius swirskii - 25 000 adults on vermiculite
  • 100-1705 - Amblyseius swirskii - 50 000 adults on vermiculite


  • 100-1701 -Amblyseius swirskii - 100 slow release sachets

Introduction rate

Amblyseius swirskii
Introduction Quantity Surface Frequency Duration
Preventive 1 sachet per plant 4 to 6 weeks continuously
Preventive 25 per m2 14-21 days As needed
Curative 50 per m2 weekly as needed
Hot spot 100-250 per m2 weekly as needed

Product data sheet(s)

Fiche signalitique
Amblyseius swirskii sachets - technical sheet

Additional information

  1.   - Biological control of broad mites (Polyphagotarsonemus latus) with the generalist predator Amblyseius swirskii (Experimental and Applied Acarology, 2010)
  2.   - Prey suitability of western flower thrips, Frankliniella occidentalis, and onion thrips, Thrips tabaci, for the predatory mite Amblyseius swirskii (Biological Science and Technology, 2008)
  3.   - Swirski mite - Amblyseius swirskii (University of Florida, 2016)
  4.   - Dispersal of Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) on potted greenhouse chrysanthemum (Biological Control, 2010)

Targeted pest

Targeted production

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