Abstract
The presence of foveae dorsales and underlying foveal glands was documented in the adult males and compared to those in the females of Amblyomma americanum, A. maculatum, Dermacentor andersoni and D. variabilis. Externally the male foveae dorsales were smaller and had fewer slits than the female glands, but internally there were no obvious gross differences between the sexes in the foveal glands.