However, researchers such as Henry Hsiao suggest the reason for
moths cirleing lights has to do with a visual distortion called
a Mach band. Henry Hsiao conjectures that moths, as nocturnal
creatures, fly towards the darkest part of the sky in pursuit
of safety. Moths are thus inclined to circle ambient objects in
the Mach band region, usually at a radius of about one foot, depending
on the species.
flowers usually depend on moths (or bats) for pollination, and
artificial lighting can draw moths away from the flowers, impacting
the plant's ability to reproduce. Light pollution is coming under
increasing scrutiny as a source of many subtle ecological changes.
Moths are commonly regarded as pests because the larvae of a few
species eat fabric such as clothes and blankets made from natural
fibres such as wool. They are less likely to eat mixed materials
containing artificial fibres.
Images 1 Though 3 Are From The U.S. Fish & Wildlife Service
Imges 4 Through 7 Are From The U.S.D.A.