Tick sizes and appearances

* In general, adult I. scapularis ticks are about the size of a sesame seed (approximately 3 mm).

¶ Nymphal I. scapularis ticks are approximately the size of a poppy seed (<2 mm).

Reproduced from: Tickborne Diseases of the United States: A Reference Manual for Healthcare Providers, 5th ed, Centers for Disease Control and Prevention 2018. https://stacks.cdc.gov/view/cdc/55837 (Accessed on February 26, 2025).