The testis shrinks and looses its red-orange color. The seminal vesicle shrinks and turns reddish-brown while the vas deferens becomes a thin dark red line. The penis autotomizes leaving a small yellow bump. As in females, parasitism by trematode flatworms may result in abnormalities of the reproductive system. Reproduction Reproductive systems are reduced and inactive from about June to September in North Carolina.
Males become active before females and remain active longer.
About November-December both sexes should have well developed reproductive systems. Most breeding occurs in February to May and the reproductive systems begin to regress after then. During copulation the male inserts the penis into the female gonopore and deposits sperm. The exact site of fertilization is not known but is presumed to be proximad the albumen gland. The eggs are placed in capsules which are attached to the substratum by the pedal gland.