A study of pollination in the tropical fruit, mango (Mangifera indica L.), made collections of the insects associated with the inflorescences necessary. Hand nets and other usual methods of trapping (Peterson 1937, Oman & Cushman 1946) proved unsatisfactory. Difficulties were experienced not only with the actual capturing of insects but also with the separation of small forms from plant debris. Observations revealed that some of the smaller types, e.g., thrips, were not appearing in the collections with a frequency suggested by their numbers on the flowers. In order to overcome these problems and provide greater efficiency, a mechanical collecting device which creates suction through dual separating nets was constructed.