Thrips parvispinus
Highly invasive thrips species causing scarring, distortion and rapid crop damage.
Thrips parvispinus is an invasive species increasingly found in ornamentals and edible crops. Damage includes silvering, bronzing, scarred leaves, bud distortion and flower abortion. Populations explode rapidly in warm conditions and often resist chemical control. Biological control relies on predatory mites (Amblyseius swirskii, Transeius montdorensis) and predatory bugs such as Orius laevigatus. Early intervention and high-density introductions are essential.
Biological Controls for Thrips parvispinus
The species below are examples of beneficial organisms commonly used against thrips parvispinus. Recommendations are based on published biological control information and practical IPM experience. Always confirm suitability for your crop, growing system and local conditions before use.
Amblyseius montdorensis + Orius laevigatus
Environment: glasshouse
Temperature Range: 20.0 – 32.0°C
Rate: Montyline 50–100 mites/m²; Oriline 1–2 bugs/m² in hotspots
Frequency: Re-introduce after 2–3 weeks where pressure is high
Warm-season thrips predator combination; early introductions essential with T. parvispinus.
Orius majusculus
Environment: all
Temperature Range: 15.0 – 30.0°C
Rate: 0.5–2/m²
Frequency: introduce early; top up as needed
Leaf-focused Orius predator suited to vegetative thrips pressure. Integrate with predatory mites in warm crops.
Further BioWiki Reading
For more background on pest biology, beneficial insects and environmental factors, use the BioWiki alongside this practical control guide.
Related Biological Solutions
Growers dealing with thrips parvispinus often also monitor these pests as part of a complete IPM programme: