Where were the dragonflies come from Guam?

Dragonflies in Guam are believed to have originated from various regions, primarily through natural dispersal and migration. They can travel significant distances, often arriving on islands like Guam via wind currents or by hitching rides on vegetation and boats. Additionally, human activities, such as trade and transport, have likely contributed to the introduction of certain dragonfly species to the island. Overall, Guam's tropical climate provides a suitable habitat for these insects.