10/22/2026
Lone star tick (Amblyomma americanum) is an aggressive species of tick becoming more common in southeastern Massachusetts. It gets its name by the white dot that adult females have. Other stages of lone star tick do not have this dot.
Lone star tick is associated with several tickborne diseases, including alpha-gal syndrome (AGS). AGS is commonly referred to as the "red meat allergy" but includes most mammalian products, including gelatin and dairy.
Based on tick surveillance conducted throughout the county in 2026 and on reported data from residents, here are the towns within Plymouth county that currently have lone star tick populations: Hull, Middleborough, Marion, Mattapoisett, and Wareham.
If you have any information on lone star tick in your town, please feel free to report it to Plymouth county extension.
Lone star ticks behave differently than deer ticks and dog ticks. But, bites are, fortunately, preventable with the same repellents - EPA registered repellents, such as DEET, picaradin, and IR3535, as well as clothing treated with permethrin.
Lone star tick photo:
Photo credit: Dr. Amanda Loftis, Dr. William Nicholson, Dr. Will Reeves, Dr. Chris Paddock, via CDC Public Health Image Library