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Phytoseiulus persimilis
Predator of twospotted mite


Target Pests

Twospotted mite (Tetranychus urticae)
Bean spider mite (T. ludeni)


Crops suitable

Cut flowers, nursery crops, strawberries, vegetables, deciduous fruits in coastal areas, tropical fruits.


Predatory mite. Prefers warm and humid environments. Voracious feeder on all stages on TSM. Able to hunt out mites in dense foliage. Tolerant to some insecticides and most fungicides.

Persimilis adult - left, twospotted mite - centre,
TSM egg - top right, persimilis egg -bottom right.

How to use

Persimilis are supplied in various ways:on soybean or French bean leaves or in a vermiculite mix.

The bean leaves are simply placed amongst foliage of infested plants.

Initial introduction should be followed by regular smaller releases in mite susceptible plant varieties.

Early identification and treatment of "hot spots" is recommended.

Suppliers supply more detail on usage and see PDF below.


Twospotted mite damage on roses

Release rates

Greenhouse crops:

Initial release: one pack of 10,000 (all life stages) per 200 m2.

Regular releases: one pack of 10,000 per 1,000 m2

Outdoor crops: one pack per 500 - 1,000 m2.


Placing beans leaves in gerberas



Other biocontrol agents commonly used with Aphidius:


Detailed descriptions and instructions for use are provided in

The Good Bug Book - Second Edition Available from good bug suppliers

Or view or download a PDF file of the Book entry for Persimilis.