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Tick Anatomy & Terms

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Capitulum = the head of the tick.

Basis Capitulum = the base of the head onto which mouth parts are attached.

Hypostome = The barbed mouth part that anchors the tick to its host.

Palps = Paired sensory mouth parts.

Scutum = Hard scale-like dorsal covering.

Eye = Ocular lens associated with the surface of the scutum on some tick species.

Coxa = Basal leg attachment structure.

Spiracle = Opening to the tracheal (respiratory) system.

Festoons = Block-like structures on the posterior margin of some ticks.

Anal Groove = A ventral indention or furrow associated with the anus.

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NC State College of Veterinary Medicine
1060 William Moore Drive
Raleigh, NC 27607