Associate Certified Entomologist (ACE) Practice Exam

What role do exterior lights serve regarding pest management?

1. Providing aesthetic appeal

2. Deterring nocturnal animals

3. Attracting nocturnal flying insects

4. Guiding travelers

The correct answer is: Attracting nocturnal flying insects

Exterior lights primarily serve the role of attracting nocturnal flying insects. This is a well-documented phenomenon where certain types of lights, particularly those that emit ultraviolet (UV) light, can draw in insects such as moths and other flying pests. Many insects are naturally attracted to light at night as part of their navigation process, which involves using the moon and stars for orientation. When artificial lights are installed outdoors, especially near entry points of buildings or around residential areas, they can inadvertently become a magnet for these insects. This attraction can lead to increased pest activity around those areas, potentially resulting in various issues for homeowners or property managers, such as unwanted infestations, property damage, or increased chances of pests entering living spaces. Understanding this role is essential in pest management strategies, as controlling the placement and type of exterior lighting can help mitigate insect attraction and consequently reduce pest-related problems.