Diagnosing thrips in lupins
Onion thrips (Thrips tabaci) and plague thrips (Thrips imagines) are 2mm long, cigar shaped and range in colour from yellow-orange to dark grey. Adults and nymphs pierce plant tissue and suck sap. Control is rarely warranted for this pest.
What to look for
- Adults and nymphs pierce plant tissue and suck sap, producing distorted leaves.
- Flower abortion abortion occurs in extreme cases.
- Adults are 2mm long, cigar-shaped and range in colour from yellow-orange to dark grey. They have tiny narrow wings folded over the back.
- Nymphs are similar in shape, pale yellow to orange-yellow, wingless and smaller in size.
What else could it be
|Diagnosing aphids in narrow-leafed lupins||Distorted leaves||Aphids easily seen|
|Diagnosing cucumber mosaic virus in narrow-leafed lupins||Distorted leaves||Virus causes young leaves to be pale and bunched. As infection continues entire plant can be affected. Thrips cause only some leaves to be distorted.|
Where did it come from?
- Thrips rarely cause damage to warrant control.
Page last updated: Wednesday, 26 April 2017 - 1:03pm