31. It was observed that thrips population peaked during the dry months of July to October. 32. Two predatory beetles were found attacking thrips . 33. The earliest fossils of thrips date back to Permian ( " Permothrips longipennis" 34. This makes thrips ideal as models for testing the effectiveness of new pesticides and methods. 35. It is being studied for use against lygus bug on cotton and thrips in vegetables. 36. It is commonly used to kill thrips . 37. This can be done by controlling weeds and thrips , the most common vector transmission. 38. The thrips 'natural enemies include pirate bugs of genus " Orius ". 39. This thrips is native to South America. 40. The first comprehensive detailed work on Sri Lankan thrip fauna came through Schmutz in 1913.
