Predatory Mite, Neoseiulus fallacis

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Predatory Mite, Neoseiulus fallacis is a very effective predator in controlling different species of pests mites especially red spider mites also known as two-spotted spider mites, Tetranychus urticae and European red mites that cause a serious damage to many economically important crops and fruits grown in the greenhouses and/or fields. Depending upon their prey, the adults of predatory mite, Neoseiulus fallacis are red to brown in color. Adult Neoseiulus fallacis mites are pear-shaped with four pairs of legs. Females of Neoseiulus fallacis generally lay over 60 pear-shaped eggs on the underside of leaves. These eggs hatch into tiny transparent non-feeding larvae with six legs. These larvae then develop through two successive developmental stages that termed as protonymphal and deutonymphal stages and then into adult stages. Both these immature nymphal stages resemble to their parents. These two nymphal stages and adults are voracious feeders of pest mites. The optimum temperature for normal reproduction and development of these predatory mites is between 21 and 38°C (70-100°F) and relative humidity between 40-60%.

Facts (show all)

- Effective against the following pest mites
  • Broad mites, Polyphagotarsonemus latus
  • Brevipalpus citrus mite, Brevipalpus californicus
  • Carmine red mite, Tetranychus cinnabarinus
  • Citrus red mite, Panonychus citri
  • Cyclamen Mite, Phytonemus pallidus
  • European red mite, Panonychus ulmi
  • Pacific mite, Tetranychus pacificus
  • Six-spotted mite, Eotetranychus sexmaculatus
  • Southern red mite, Oligonychus ilicis
  • Tomato russet mite, Aculops lycopersici
  • Two-spotted spider mite, Tetranychus urticae
+ Key factors for Predatory Mite, Neoseiulus fallacis effectiveness
  • Neoseiulus fallacis are natural predators of pest mites.
  • These predatory mites are active and will feed on pest mites at a wide range of temperature from lowest level of 1.6°C (35°F) to highest level of 38°C (100°F).
  • Both adults and nymphs of this predatory mite feed voraciously on all the stages of pest mites.
  • The main characteristics of this predatory mite is that it grows faster than its host mites meaning it can overtake multiplying population.
  • Adults of this predatory mite can eat on over 15 pest mites/day.
  • Adults of Neoseiulus fallacis are very active and can move easily from one colony to other colony of pest mites. If the leaves of one plant touches to leaves of other plants, these predatory mites can easily move to other plants that are infested with pest mites.
  • Neoseiulus fallacis are commercially available and can be released in the pest mite infested vegetable crops including bean, cucumber, eggplant, sweet pepper and tomatoes, and several ornamental plants including roses.
+ How Neoseiulus fallacis mites work in the greenhouses or fields
  • Neoseiulus fallacis are known to feed voraciously on their hosts including spider mites.
  • After application in the greenhouses or fields, predatory Neoseiulus fallacis mite starts munching on their host mites.
  • Each adult mite can consume over 15 pest mites per day.
  • While feeding, predatory mites develop and reproduce faster than their host mites.
  • Under favorable environmental conditions and if there is enough food around, these mite can recycle continuously (do not need to apply again and again) and help to keep the pest population under economic threshold level.
+ Predatory mite, Neoseiulus fallacis feeds on following stages pest mites
  • Adults of this predatory mite can feed on all the stages such as eggs, larvae, protonymphs, deutonymphs and adults of pest mites.
+ How many predatory mites, Neoseiulus fallacis should be release for the effective control of pest mites
  • 4-5 predatory mites/square feet (0.1 sq. meter) area bi-weekly, 2-3 times.
  • 7,000 to 10,000 predatory mites/acre, bi-weekly, 2-3 times.
+ When and how predatory mites, Neoseiulus fallacis should be released
  • These predatory mites can be release in any cropping system where host mites are causing damage to crops.
  • As a curative measure these predatory mites should be released after you start noticing presence of pest mites on the plants.
  • Release Neoseiulus fallacis mites when temperature is between 15-38°C (59-100°F) and the relative humidity is between 40-60%.
  • Release the adults of predatory mites by opening vials and sprinkling them on plant leaves.
+ Why you need them
  • they can reduce the crop damage by feeding on crop pests responsible for the damage
  • they can munch on different stages of their hosts including eggs
  • they are able to actively search for their hosts and feed on them
  • they can reproduce and continue their life cycle on the foliage after first application
  • they are commercially available and easy to apply in the greenhouses or fields
+ Why predatory mites are safer than traditional pesticides
  • they do not damage plants
  • can be used and applied around children and pets
  • do not cause any harm to the personnel involved in their production and application
  • food products are safe to handle and eat when they are treated with mites
  • they do not harm humans, animals and pollute the environment
+ Research Papers
  1. Coop, L.B. and Croft, B.A. 1995. Neoseiulus fallacis: dispersal and biological control of Tetranychus urticae following minimal inoculations into a strawberry field. Experimental and Applied Acarology 19: 31-43.
  2. Strong, W.B., Croft, B.A. and Slone, D.H. 1997. Spatial Aggregation and Refugia of the Mites Tetranychus urticae and Neoseiulus fallacis (Acari: Tetranychidae, Phytoseiidae) on Hop. Environmental Entomology 26: 859-865.

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