Are Bot Flies In Colorado? Exploring The Presence Of Bot Flies In The Centennial State

“What is the prevalence of botflies in Colorado? According to data from Colorado State University, botflies, particularly those belonging to the genus Cuterebra, which primarily infest rabbits and rodents, are the most frequently encountered botfly species in the state. Additionally, Colorado is also home to other botfly species, such as those in the genus Cephenemyia, which primarily affect deer and elk. Beyond these more prevalent types, there are a few less common botfly species found in the region as well. This information is based on data collected as of September 30, 2022.”

Bot flies, specifically the species Dermatobia hominis (commonly known as the human bot fly), are primarily found in the Americas. Their distribution spans from southern Mexico through Central America and extends into various parts of South America, reaching as far south as northern Chile and Argentina. While D. hominis is not typically found in the United States, cases of human bot fly myiasis have been observed in individuals who have traveled to rural areas in countries where these flies are endemic. Therefore, cases of infestation in the United States are usually associated with travelers returning from these regions.