Figure 4 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 4. Substructures of setae. A, infracuticular articulation with the general cuticle. Arrow indicates deep socket. B, supracuticular articulation (arrows) with the general cuticle. C, annulus seen as a ring in the cuticle (arrow). D, two rows of denticles arranged distally on a seta. E, large setule displaying articulation (arrow) with setal shaft. F, small setule with weak articulation (arrows). G, stitched picture showing gradual change from setule (arrow) to denticle (arrowhead) on the same seta. H, subterminal pore (arrow) from seta with denticles. I, terminal pore (arrow) from seta with denticles.