The spermatangia is a tough sac that contains the sperm mass and an external cement material at one end. The spermatangia can often be found attached to a previously mated female by the cement and sometimes the spermatangia is embedded well into the tissue of the female presumably due to the caustic effect of the cement. Attachment sites of spermatangia vary depending on the species. References Drew, G. A. 1911. Illustrations modified from Drew, 1911.
Colors are artificial.