Have you seen these ticks on your horse? Hover over each image for more info!

Lone Star Tick   Amblyomma americanum    Range - southern US, but expanding north   Active season - late spring, early summer   Disease transmission to horses-  none known   Disease transmission to humans-  ehrlichiosis; possibly Rocky Mountain Spotted Fever

Lone Star Tick

Amblyomma americanum

Range- southern US, but expanding north

Active season- late spring, early summer

Disease transmission to horses- none known

Disease transmission to humans- ehrlichiosis; possibly Rocky Mountain Spotted Fever

Gulf Coast Tick   Amblyomma maculatum    Range - southern, gulf coast states, but expanding north   Active season - late summer, early fall   Disease transmission to horses-  “Gotch Ear”: permanent ear tissue damage due to prolonged bite   Disease transmission to humans-  known to carry bacteria related to Rocky Mountain Spotted Fever

Gulf Coast Tick

Amblyomma maculatum

Range- southern, gulf coast states, but expanding north

Active season- late summer, early fall

Disease transmission to horses- “Gotch Ear”: permanent ear tissue damage due to prolonged bite

Disease transmission to humans- known to carry bacteria related to Rocky Mountain Spotted Fever

Winter Tick   Dermacentor albipictus    Range - all across North America   Active season - winter   Disease transmission to horses-  irritation and blood loss due to high numbers in one infestation   Disease transmission to humans-  none known

Winter Tick

Dermacentor albipictus

Range- all across North America

Active season- winter

Disease transmission to horses- irritation and blood loss due to high numbers in one infestation

Disease transmission to humans- none known

American Dog Tick/ Rocky Mountain Wood Tick   Dermacentor variabilis / Dermacentor andersoni   These ticks look identical, and DNA must be analyzed to accurately identify.   Range -  D. variabilis-  throughout US, except the Rocky Mountains   D. andersoni-  confined to Rocky Mountains   Active season - spring, early summer   Disease transmission to horses-  inflammation, open wounds and proud flesh   Disease transmission to humans-  Rocky Mountain Spotted Fever

American Dog Tick/ Rocky Mountain Wood Tick

Dermacentor variabilis / Dermacentor andersoni

These ticks look identical, and DNA must be analyzed to accurately identify.

Range- D. variabilis- throughout US, except the Rocky Mountains

D. andersoni- confined to Rocky Mountains

Active season- spring, early summer

Disease transmission to horses- inflammation, open wounds and proud flesh

Disease transmission to humans- Rocky Mountain Spotted Fever

Deer Tick/ Western Black Legged Tick   Ixodes scapularis / Ixodes pacificus   These ticks look identical, and DNA must be analyzed to accurately identify.   Range -  I. scapularis-  throughout the eastern US   I. pacificus-  western coast of US   Active season - fall, winter   Disease transmission to horses-  Lyme disease, Equine Granulocytic Anaplasmosis   Disease transmission to humans-  Lyme disease, Anaplasmosis, Powassan virus, Babesiosis

Deer Tick/ Western Black Legged Tick

Ixodes scapularis / Ixodes pacificus

These ticks look identical, and DNA must be analyzed to accurately identify.

Range- I. scapularis- throughout the eastern US

I. pacificus- western coast of US

Active season- fall, winter

Disease transmission to horses- Lyme disease, Equine Granulocytic Anaplasmosis

Disease transmission to humans- Lyme disease, Anaplasmosis, Powassan virus, Babesiosis

Spinose Ear Tick   Otobius megnini    Range - western US   Active season - year round   Disease transmission to horses-  abnormal behavior due to severe irritation in ear or ear canal   Disease transmission to humans-  none known

Spinose Ear Tick

Otobius megnini

Range- western US

Active season- year round

Disease transmission to horses- abnormal behavior due to severe irritation in ear or ear canal

Disease transmission to humans- none known