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images of a hermaphrodite

Here, a close-up of the Siphotperon sp. 1’s penile stylet.

(Image credit: © Johanna Werminghausen)
The slug’s penile stylet (arrow) penetrates its mate’s outer membrane and injects prostate fluid into its circulatory system.

(Image credit: © Johanna Werminghausen)
For its male organ, the slug has a two-pronged penis consisting of a penile bulb that transfers sperm, and a separate, needlelike appendage called a penile stylet that stabs and injects partners with prostate fluid-containing sex hormones called allohormones.
Not only do the slugs inject sperm into each other, they also stab each other in the head for several minutes after penetrating each other with their penile bulbs; they remain stabbed and pumping prostate fluid into each other’s circulatory systems for the majority of their 40-minute mating period, researchers report on Nov. 12, 2013, in the journal Proceedings of the Royal Society B.
By LiveScience Staff 13 November 2013
Two Siphopteron sp. 1, caught in the act.

(Image credit: © Johanna Werminghausen)

A simultaneous hermaphrodite, the slug has both male and female reproductive organs that it uses simultaneously during sex. The male organ is a two-pronged penis equipped with spines.