Neoseiulus fallacis

Neoseiulus fallacis predatory mite





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Identification card icon Identification

Neoseiulus (Amblyseius) fallacis is a native North America predatory mite, used to supress pest mites such as two-spotted spider mites, spruce spider mites, European red mites, cyclamen (or strawberry) mites and broad mites in fruit, ornamental and market garden crops.

Adults are pear-shaped, 0.5 mm long, with long legs. They can vary in colour from cream to orange-beige. The immature stages are generally a semi-transparent cream colour. The eggs are oval and 0.33 mm in diameter (double the size of a two-spotted spider mite egg).

Neoseiulus fallacis has excellent dispersal abilities and can withstand the cold and heat (active between 9 °C and 32 °C). This predatory mite can survive when pest populations drop to low levels. Fallacis is easily establishes itself throughout outside crops.

Neoseiulus fallacis can be used with the predatory mite Phytoseiulus persimilis and the predatory beetle Stethorus punctillum in a management strategy against spider mites.

  • Cannabis
  • Small fruits (strawberries, raspberries, etc)
  • Fruit trees (orchard)
  • Ornamental plants
  • Market garden crops (cucumbers, tomatoes, peppers, etc.)
  • Hop
  • Soy

  • Two-spotted spider mite (Tetranychus urtica)
  • Spruce spider mite (Oligonychus ununguis)
  • European red mite (Panonychus ulmi)
  • McDaniel spider mite (Tetranychus mcdanieli)
  • Broad mite (Polyphagotarsonemus latus)
  • Tomato Russet Mite (Aculops lycopersici)

  • Neoseiulus fallacis has a life cycle of 7 to 9 days at 21 °C, or 3 days at 32 °C.
  • Adults live from 14 to 62 days.
  • N. Fallacis is active from 9 °C to 32 °C and needs humidity levels over 50%.
  • Females lay 1-5 eggs per day, for a total of 26 to 60 eggs in their lifetime.
  • A female will consume 2 to 16 spider mites per day
  • Outside, adult females enter diapause when the days get shorter (less than 14 hours of light).
  • Neoseiulus fallacis will not enter into diapause in greenhouses when temperatures are kept over 18 °C.

Bottle

Bottle of Neoseiulus fallacis

A Tube containing only adult and juvenile predatory mites in vermiculite.

Box

Contennant de Neoseiulus fallacis sur feuilles

Box containing predatory mites at several stages of development (eggs, juveniles, and adults) and spider mites (prey for transport) on bean leaves.

Application rate

Neoseiulus (Amblyseius) Fallacis
Introduction Quantity Surface Frequency Duration
Preventive in greenhouses 2 per m2 weekly or bi-weekly as needed
Curative light in greenhouses 5 per m2 weekly or bi-weekly as needed
Spider mites in field 2 per m2 once year
Broad mites in field 5 per m2 once year

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  • Fiche signalitique
    Neoseiulus fallacis on bean leaves
  • Fiche signalitique
    Neoseiulus fallacis on vermiculite


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Biological control products and beneficial insects for farmers and greenhouse growers