Is the cotton red spider mite a spider?
Is the cotton red spider mite a spider?
No, the cotton red spider mite is not a spider; it is a mite, belonging to the family Tetranychidae. The common term "red spider" actually refers to red spider mites (Tetranychus spp.), which are close relatives of bryobia mites.
Differences between red spider mites and spiders
- Red spider mites (spider mites): less than 1 mm in length, belong to the subclass Acari (mites), not true spiders.
- Spiders: several millimeters to several centimeters, belong to the order Araneae.
- Red spider mites have 8 legs (adults); spiders also have 8 legs.
- Red spider mites produce very fine, thin webbing to protect themselves and their eggs.
- Spiders build large, regular webs for catching prey.
Differences between red spider mites and bryobia mites
- Red spider mites: bright red or dark red, slightly larger, active on leaf undersides.
- Bryobia mites: dark red or brownish-green, slightly smaller, often clustered near leaf veins.
- But their damage and control methods are essentially the same.
Common characteristics
- Both belong to the spider mite group (Tetranychidae).
- Both feed by sucking sap from leaf undersides.
- Both produce fine webbing on the undersides.
- Both reproduce rapidly in dry, hot conditions.
- Control methods are the same — spray bifenazate-containing insecticide on leaf undersides.
Types of red spider mites
What people commonly call "red spider mites" actually includes several species, most commonly *Tetranychus cinnabarinus* and *Tetranychus urticae*. Their body colors vary slightly (red, brown, yellowish-green), but their damage and control methods are basically the same.
Control methods are the same
Whether red spider mites or bryobia mites, control methods are identical:
- Keep the environment humid and well-ventilated.
- Regularly check leaf undersides.
- Spray bifenazate-containing insecticide on leaf undersides.
- Repeat 2-3 times.