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American Dog Tick
The American dog tick, dermacentor variabilis, is more commonly known as the woodtick. The American dog tick is found throughout the eastern U.S., Pacific Coast and northern Texas regions. They feed mainly on dogs and humans and are most active in early spring and summer. The adult American dog tick is reddish-brown and about 3/16-inch long. They can transmit Rocky Mountain spotted fever, tick paralysis, tularemia and anaplasmosis to animals and humans.
Lone Star Tick
The lone star tick, amblyomma americanum, is named for the star-shaped mark on the center of its back. It is found throughout the southern U.S. States including the northern Texas region. The lone star tick feeds on a variety of hosts, including humans, dogs and cats. Adult ticks are brown and 1/8-inch long. People bitten by lone star ticks may develop a circular rash resembling the rash of early Lyme disease. The Centers for Disease Control has confirmed the lone star tick does not transmit Lyme disease. Lone star ticks may transmit tularemia and spotted fever to humans.
Deer Tick
The deer tick, ixodes scapularis, is also known as the black-legged tick. Deer ticks are found in wooded areas of the southeastern U.S. states including Texas. The deer tick feeds primarily on deer, mice, birds and lizards. Deer ticks are most active from July to September. Adult deer ticks are about as big as a sesame seed and reddish-brown in color. The deer tick can transmit Lyme disease and anaplasmosis to humans and animals.
Brown Dog Tick
The brown dog tick, rhipicephalus sanguineus, is found in Texas and most of areas of the southern U.S. The brown dog tick is active year-round because it can survive its entire life cycle indoors. It feeds mainly on dogs but will also feed on other mammals, including humans. High infestation levels of dog ticks often occur in kennels and animal hospitals. Dog ticks rarely cause diseases in humans, but can transmit canine ehrlichiosis and canine babesia to dogs.