Lone Star Tick

What it does

Lone star ticks are unusually aggressive human-biters that actively crawl toward hosts rather than waiting passively. All three life stages (larva, nymph, adult) bite people. They quest by climbing vegetation and grabbing on as a host brushes past, then feed for several days before dropping off to molt or lay eggs.

Where it lives

They live in wooded and brushy areas, forest edges, tall grass, and overgrown yards, especially where deer are common. Larvae often cluster, so a single misstep into a nest can leave dozens of tiny 'seed ticks' on the skin. They range across the Southeast and much of the eastern and south-central US and are expanding northward.

How it breeds

Females drop off after feeding and lay a single mass of several thousand eggs, then die. Larvae hatch, feed, and molt to nymphs, which feed and molt to adults, with one generation typically taking a year or more. Each stage needs one blood meal, and unfed ticks can survive months while waiting for a host.

What it eats

Ticks feed only on the blood of animals and people. Lone star ticks feed on deer, livestock, dogs, birds, small mammals, and humans across their life stages, using cutting mouthparts to anchor and draw blood.

Identification

Adults are round and reddish-brown; the female has a distinctive single silvery-white spot in the center of her back, while males have scattered pale streaks along the rear edge. Unfed adults are 3-4 mm and swell much larger after feeding. Tiny larvae ('seed ticks') have six legs; nymphs and adults have eight.

Signs of an infestation

• A tick attached to skin, often in warm folds or the hairline
• Several tiny 'seed ticks' clustered on the legs or ankles
• A round, itchy red bite site after time outdoors
• An expanding rash days after a bite (possible STARI)
• New itching or hives after eating red meat (possible alpha-gal)

Prevention tips

• Wear long pants tucked into socks and use EPA-registered repellent outdoors
• Treat clothing and gear with permethrin before hikes
• Do a full-body tick check within two hours of coming indoors
• Keep grass short and clear leaf litter and brush at the yard edge
• Use vet-approved tick preventives on dogs and cats

Professional solutions

Yard tick pressure can be reduced with perimeter and vegetation treatments; pest professionals target the shaded, brushy 'tick zones' at lawn edges. For heavy or recurring yard problems near wooded property, a professional acaricide program plus habitat modification is more effective than spot spraying. Attached ticks should be removed promptly with fine tweezers.