In Australia we have Bogong moths that migrate in large numbers at certain times of year. I am not sure that they ever migrate in such numbers that you would be able to say they carpeted the ground thickly as they do in this article.
Imagine how many moths it would take to cloud the lights of Broadway for hours. I am sure there were less lights in 1932 but still, that is a lot of moths. What an amazing sight it would have been.
I wonder what type of moths they were and if they are known for mass migration?