A light colored upside-down umbrella can be used. Light traps Many insects are active at night and are attracted to lights. Light traps usually gather large numbers of insects for surveys and should be monitored if you want live material. The insects are attracted to the light, fall through the funnel into the container and cannot escape. Usually a white sheet is set up behind and below the black light so that it illuminates the sheet.
Insects gather on the sheet and can easily be removed for examination or collection.
In the morning the insects fly away or are eaten by eager birds. If you don't have a UV black light, a strong porch light at the dark of the moon will attract many insects. Place a white sheet on the wall by the light and see if more insects come in. Lights in remote areas may attract many insects. Look on the ground below the light and on surrounding buildings or plants for roosting insects.