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Red Spider Mite

Tetranychus urticae

Two Spotted Spider Mite

Feeds off of the cells in leaves which in turn leaves pale spots on the plant.

The Tetranychus urticae is a tiny red insect that is barely visible to the naked eye, measuring 0.4mm long. They are most commonly found in the greenhouse or tropical houses, where temperatures are warmer. They spin very fine webs on and under leaves.

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Detection

Appearance
Tetranychus urticae are extremely small mites that you can barely see. They are a deep red in colour and when squished they leave behind red stains. They measure around 0.4mm in length.
Symptoms
Pale spots or scars can be see in the leaves on damaged plants where the mites have been feeding off of the cells inside the leaves.
Activity
Diurnal

Personality

Order
Trombidiformes
Family
Tetranychidae
Metamorphosis
Incomplete

Biological treatment

Raise humidity and ventilate glasshouses to increase air movement as the Red Spider Mite like and thrive in low humidity and high temperature with little air movement. Within a heated glasshouse, year round the biological control Phytoseiulus persimilis a predatory mite can be used for Red Spider Mite control and will eat all stages of spider mite. Phytoseiulus persimilis can survive outside in the summer if warm enough and if there are Red Spider Mite available for them to live on.

Chemical treatment

Check availability with your local Garden Centre. Spray Bioneem / Biocure.

Attracts this pest

Pears, tomatoes, ornamental cut flowers, cape gooseberries

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