Undergraduate researcher here trying to collect moths for a research project, what’s wrong with my trap?

I’ve had this set out for a few nights and haven’t caught anything aside from a single ant-like bug. The set up is a 5 gallon bucket full of cardboard egg cartons, a lamp shade repurposed into a funnel, and a lamp that hangs above the funnel. The light bulb is one used in bug zappers. The night time temps out here are around 50-60 F. My project involves comparing the number of native moths in urban areas vs natural areas so the trap has to remain in an urban area full of street lights. What can I do to make the trap more attractive to moths?

I’ve had this set out for a few nights and haven’t caught anything aside from a single ant-like bug. The set up is a 5 gallon bucket full of cardboard egg cartons, a lamp shade repurposed into a funnel, and a lamp that hangs above the funnel. The light bulb is one used in bug zappers. The night time temps out here are around 50-60 F. My project involves comparing the number of native moths in urban areas vs natural areas so the trap has to remain in an urban area full of street lights. What can I do to make the trap more attractive to moths?