Many people find moths uncomfortable insects to be close to perhaps with more reason than the obvious fluttering of the wings. It was thought that to have a moth enter the house traditionally was a sign of misfortune to follow. In some countries this was thought to be a sign that someone would die within the following twelve months. Black moths were a sure sign that a death in the house would occur almost immediately according to European folklore.
White moths have almost universally been associated with the dead, in that this sight indicates that the moth is carrying the soul of a departed loved one. Therefore as one would expect it was also considered to be courting disaster to kill one.