THYSANOPTERA
Thrips
THYSANOPTERA
Thysanos: tassel
Ptera: wings
Incomplete
Rasping-sucking mouthparts
Narrow, fringed wings (nymph wingless)
Can transmit diseases
Several generations / year
THRIPS (156)
HOSTS
• Flower thrips: flowers and buds
• Greenhouse thrips: feed openly on
foliage
PREDATORY THRIP
THRIPS (139)
DAMAGE
• Mostly harmless to woody plants
• Stippling and bleaching foliage
• Dead spots on leaves
• Tar spots underside of leaves
THRIPS (139)
THRIPS (139)
THRIPS (139)
MONITOR
• Branch beating (paper)
• Sticky traps: blue for western flower
thrip, yellow for other species
THRIPS (139)
CONTROL
• Maintain plant health to tolerate
• Soap and Oil
• Predatory wasp release in greenhouse
Chilli Thrips-Adult
1st Instar Larva
Chilli Thrips
nd
2 Instar Larva
Scouting
Chilli Thrips - rose
Ligustrum
Pittosporum
Ligustrum
Chilli Thrips-Schefflera
Why Biological Control?
• Thrips control impacted
implementation of IPM programs in
many ornamental crop systems.
• Chemical control in the landscape is
NOT SUSTAINABLE
Franklinothrips vespiformis
Adult
Franklinothrips vespiformis
Nymph