part_of adult Hypostome adult hypostomal recuved denticle Fig. 4-1, Fig. 4-2, Fig. 4-13, Fig. 4-14, Fig. 4-16, Fig. 7-1, Fig. 7-3, in Biology of Ticks ISBN:0-19-505910-7. TADS:0000012 TADS:0000012 Teeth The hypostome is armed with numerous recurved denticles (= teeth) that project posteriorly. The denticles are arranged in rows,typically two or three on either side of the center line indicated by the food canal. The number of rows and number of denticles in arow provide useful characters for taxonomic separation of species. default_namespace