Figure 6. Cells of the testicular lobes of Thyanta perditor stained with PAS. a-f - Round spermatids evidencing PAS-positive reaction located in the center of the cell; g-i - the PAS-positive reaction remains in the center of the cell until the final stage of elongation of the spermatid; j - elongated spermatid demonstrating a notable elongation of the central PAS-positive reaction; k, l - spermatids in the final stage of development with continuous PAS-positive reaction in the whole head. Bar= 10 μm.