Moth trap

Entomologists use moth traps to study moth populations, behavior, distribution, and role in ecosystems, contributing to biodiversity conservation and ecological monitoring efforts.

The moths are then captured in a container, allowing researchers to identify and record the species present without causing harm.

Occasionally diurnal species such as dragonflies, yellowjacket wasps, and hover flies will also visit.

The most accepted theory is that moths migrate using the moon and stars as navigational aids, and that the placement of a closer-than-the-moon light causes subtended angles of light at the insect's eye to alter so rapidly that it has to fly in a spiral to reduce the angular change.

[citation needed] Some moths, notably Sesiidae are monitored or collected using pheromone traps.