Species · GBIF taxon 5174242
Western Black-legged Tick
Ixodes pacificusAlso known as Western Blacklegged Tick
Western black-legged ticks wait patiently on the tips of grasses and low shrubs, extending their front legs to grasp passing hosts in a behavior known as questing. These hardy parasites require three distinct hosts to complete their multi-year life cycle, transitioning from tiny larvae to nymphs and finally to breeding adults. On the Pacific coast, their relationship with local lizards plays a fascinating role in reducing the local prevalence of Lyme disease.
ParasiticWoodlandForest-Dwelling
- diet
- Blood of mammals, birds, and reptiles
- family
- Ixodidae
- threats
- Habitat clearing, host population declines, and extreme drought
- life Span
- Approximately 3 years
NE
Can transmit Lyme disease; wear long pants and perform thorough tick checks after hiking.
Transmits Lyme disease and other pathogens through its bite.
Avoid contact by staying on cleared trails, and use EPA-approved insect repellents containing DEET or picaridin.- Prevention: Wear light-colored clothing and tuck pants into socks when walking through tall grass.
- Removal: Use fine-tipped tweezers to grasp the tick close to the skin and pull straight upward.
- Inspection: Perform a thorough body check and wash clothes in hot water after outdoor activities.

