Figs. 7–10. (Fig. 7) H. leucospilota diakinesis primary spermatocyte (DiSc) showing thick heterochromatin blocks that are parts of the completely formed
chromosomes (ch). The chromosomes consisting of tight aggregations of 26 nm fibers (3). Centrioles (ce) are present at one side of the cell. Numerous
dense granules (dg) are scattered throughout the cytoplasm. (Fig. 8) H. leucospilota metaphase primary spermatocyte (MSc). The nucleus contains pieces of
chromosomes (ch) which appear in 26 nm in diameter (3). Ovoid mitochondria (mi) and dense granule (dg) are distributed throughout the cytoplasm. (Fig. 9)
H. leucospilota secondary spermatocyte (SSc) contain an oval nucleus (nu) with the large clumps of heterochromatin (hc) arising from the nuclear envelope
(ne) and passing through the central nuclear region. Chromatin fibers consist of two levels; 7 nm fibers (1) and 17 nm fibers (2). The cytoplasm consists of
numerous ovoid mitochondria (mi) and dense granules concentrated at one side of the cell. d: desmosome-like structure. (Fig. 10) H. leucospilota spermatid I
(St1) showing small nuclei with large clumps of heterochromatin (hc) packed together. Chromatin fibers consist of two levels: 7 nm fibers (1) and 17 nm fibers
(2). Ovoid mitochondria (mi) in the cytoplasm are reduced in number and larger in size. Other cytoplasmic organelles, such as membrane-bound proacrosomal
granules (mp) and the large electron-lucent vesicle (lv) are also shown.