Lone star tick
Amblyomma americanum
- Identification
- Aggressive biter; females have a single white dot on the back. Expanding its range northward.
- Lifecycle & behavior
- Multi-stage cycle; all stages bite people readily, unlike some ticks.
- When it's active in Central NY
- Historically southern but increasingly reported in the region as its range expands; active in the warm months.
- Risk & damage
- Associated with ehrlichiosis, STARI, and the alpha-gal red-meat allergy; an aggressive human-biter worth reducing around the yard.
- Why DIY falls short
- Range expansion means more properties are affected; habitat reduction matters as much as personal protection.
- How we treat it
- Seasonal habitat-focused yard treatment and monitoring as part of the tick program.
Lone star tick or another tick?
The female is unmistakable: a single bright white or cream dot in the center of the back. Males have fainter white markings around the rear edge of the shield. They are also noticeably aggressive compared with other ticks — they will actively pursue a host rather than waiting.
Lone star ticks in Central New York
Lone star ticks are far better established in the southern parts of New York — Long Island and the lower Hudson Valley — than in the Finger Lakes and Southern Tier, but their range has been expanding northward. It is reasonable to treat them as present but uncommon here rather than routine.
They are worth knowing about for one unusual reason: their bite is associated with alpha-gal syndrome, a delayed allergic reaction to mammalian meat. They do not transmit Lyme disease. If a tick with a clear white dot is found, that is worth mentioning to a clinician.
Dealing with lone star tick?
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Lone star tick — common questions
Are lone star ticks in the Finger Lakes?
They are better established in southern New York than here, and remain uncommon in this region, though their range has been moving north. We would describe them as possible rather than routine locally. The female's single white dot makes identification straightforward if one does turn up.