Spider mite control and treatment can be effectively achieved with the predatory mite persimilis. Two Spotted Mite (TSM), Tetranychus urticae or red spider mite is a common horticultural pest in a wide range of crops which can be very hard to control. Firstly, a short life cycle allows it to rapidly build up resistance to insecticides. Secondly, living on the underside of leaves makes good spray coverage and early detection very difficult. The predatory mite Phytoseiulus persimilis is used for successful spider mite control and management and has been commercially produced for over 20 years in Australia.
Even though they are only slightly larger than their prey an adult persimilis (predatory mite) devours up to twenty young or seven adult TSM each day. Under optimum conditions, they will multiply twice as fast as TSM. In other words, for as long as the prey exists, our predatory mites will continue to work fast.
Any crop, garden or indoor plant situation that is affected by spider mites or fungus gnats can be treated with Bio Works Predators, from a 250-hectare strawberry farm to a courtyard in the inner city.
Persimilis come either on the leaf or extracted into vermiculite. If they are supplied on the leaf you simply place the leaves into the affected area. The persimilis will then move off the leaf and onto your plants.
If they are in vermiculite you quite simply sprinkle them over the affected plants in the area to get rid of the spider mites.
We breed our predator mites to be tough and resilient. As such, our breeding program incorporates environmental stresses to ensure every batch is ready for the toughest conditions. Simply release the predators at the right time, and in the right amount, and let them do what they do best. It can take a little more time than dousing the area with pesticides but they work cleanly and efficiently, selectively ridding you of the target pests. Rest assured, we’re happy to advise you on how and when to achieve the best spider mite control results.
persimilis has been produced commercially for over 20 years in Australia. It feeds voraciously on all stages of two spotted mite, and this has led to its use in a wide range of crops.
persimilis thrives in warm, humid and semishaded conditions. The adult is orange, whereas the younger stages are clear. Both forms are pear-shaped and fast-moving. Its eggs are oval, tinged with orange, and twice the size of spider mite eggs.
Although extremely small (approximately 0.5 mm or 0.02 inches), P. persimilis can be distinguished with a hand lens. It is fast moving, orange to bright reddish orange, has a teardrop-shaped body and long legs, and is slightly larger than its prey. Immatures are a pale salmon color. Eggs are oval, approximately twice as large as the pest mite eggs. (Note: in the winter, the two spotted spider mite may develop a reddish color, although two dark spots on its abdomen usually distinguish this pest from other mites.)
Greenhouses, interior plantscapes, and crops where two spotted spider mites are a problem.
This species is a specialized predator of web-spinning spider mites such as the two spotted spider mite. In fact, P. persimilis feeds, reproduces, and completes development only on mites in the subfamily Tetranychinae.
P. persimilis eggs hatch in 2-3 days, and although the larval stage does not feed, the subsequent nymphs and adults feed on all stages of prey. Total time from egg to adult ranges from 25.2 days at 15°C (59°F) to 5.0 days at 30°C (86°F). The adult female may lay up to 60 eggs during her 50 day-long lifetime at 17-27°C. Generation times of from seven to 17 days are possible, depending on temperature and humidity. Due to its tropical origin, P. persimilis does not have a diapause stage and is active year-round in enclosed habitats such as interior plantscapes and greenhouses.
The predatory mite Phytoseiulus persimilis is used for the successful management of spider mites and has been commercially produced for over 30 years in Australia.
The common horticultural pest in a wide range of crops; Two Spotted Mite (TSM), Tetranychus urticae or red spider mite, can be very hard to control. A short life cycle allows it to rapidly build up populations and resistance to insecticides. Living on the underside of leaves makes good spray coverage and early detection very difficult.
(This is due to Western Australian quarantine laws)
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BanItch is the use of soil dwelling predatory mites that are used to treat the eggs and larval stages of biting midges or sandflies. It is a property management tool that helps in significantly reducing the number of these nuisance biting pests in your gardens and lawns. If biting midges or sandflies are a problem for you head over to our dedicated BanItch section.