Ventral depression of the anterior cephalothorax of soft ticks (family Argasidae) in which the mouth parts (capitulum) lie.
[L. camera, a vault, + G. stoma, mouth]
Farlex Partner Medical Dictionary © Farlex 2012
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In addition, in the most anterior part of the atrium, its cavity is ventro-medially not completely closed but is connected to the camerostome through a groove.
Unlike hard ticks, soft ticks have mouthparts that are not readily visible dorsally because their capitulum in the nymph and adult stages lies in a depression (called a camerostome) that has a dorsal wall (called a hood) that extends over the capitulum (Figure 4-4).