Pan and Malaise traps have been used widely to sample insect abundance and diversity, but no studies have compared their performance
for sampling pollinators in forested ecosystems. Malaise trap design and color of pan traps are important parameters that
influence insect pollinator catches. We compared pan trap (blue, yellow, white, and red) and Malaise trap catches from forests
in three physiographic provinces (Piedmont, Coastal Plain, and Blue Ridge) of the southeastern United States. Similarities
in trap performance between sites were observed with blue pan traps being most effective overall. Our results showed that
various pollinator groups preferred certain pan trap colors and that adding color to Malaise traps influenced insect pollinator
catches. However, pan traps generally caught more pollinators than Malaise traps. Because of their low cost and simplicity,
using several colors of pan traps is an effective way to sample relative abundance and species richness of flower-visiting
insects.
Keywords Pan trap - Malaise trap - Pollinator - Insect vision