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Fig. 4. Cyclestheria hislopi. a: Male with deposits of corpuscles in the hypodermis. Partial view of a cross section in the posterior region
of the body through intestine and testis . a-I: Higher magnification of corpuscles as obtained by rupture of the hypodermis cells. b: 'Normal'
male; cross section as above, but in the anterior part of the body at the level of the shell gland. Spermatogenesis can be observed in a and
b, especially in the median walls of the tubular testes. Spermatids are released into the testicular lumen where terminal spermiogenesis takes
place. So spermatogenesis of Cyclestheria belongs mainly to the luminal type as defined by Wingstrand (1978 from Martin, 1992). c: Sagittal
section through testes showing one segment of body with cylindric sperms. d: Higher magnification of sperm. Scale bars: a, b: 0.02 mm; a-I:
0.005 mm; c, d: 0.01 mm. Ac, outer wall of carapace; c, cuticle; fg, food groove; hc, hypodermis corpuscles; ic, inner wall of carapace; mg,
midgut; nc, ventral nerve cord; sp, spermatids; spt, spermatocytes; spz, spermatozoa.