A number of companies sell native and exotic specimens of insects and arthropods. Prices vary greatly and can be high for rare and unusual specimens. If interested in purchasing exotic specimens, order from a reputable firm that adheres to international laws governing importation of endangered species and request documentation approving shipment. Search the internet for particular species by scientific name to find sources.
One source for obtaining insect specimens:
Tropical Butterflies & Insects of America
6823 Rosemary Dr.
Tampa, Florida 33625-3980
Please contact web master to provide additional sources and contact information.