The best results are produced by approaching the insect 13 with the open end of inner tube 10B of the apparatus pointing towards the insect 13, from a distance which does not frighten the insect into flying or crawling away, such that the positive airflow indicated by the arrows A approach the surface 12 on which the insect 13 rests. In the same movement the open end of inner tube 10B is brought closer and closer to the insect 13, thus increasing the positive air-pressure on insect 13. The insect 13 that is pinned to the surface 12 on which it has rested due to the positive air-pressure indicated by the arrows A, is then vacuumed into inner tube 10B, due to the vacuum effect of the negative air-pressure indicated by the arrows B.
