O que dá para aprender no Wikipedia, que há gangsters em forma de lagarta hermafroditas (ou como está dito no site
oficial, sem classificação quanto ao sexo). O que faz sentido tendo em conta a
entrada do wikipedia de "slug":
Slugs are hermaphroditic: having both female and male reproductive organs. Once a slug has located a mate they encircle each other and sperm is exchanged through their protruding genitalia. A few days later around 30 eggs are laid into a hole in the ground. Although some species hibernate underground during the winter in temperate climates, in other species, the adults die in the autumn.
...a parte seguinte não é para todos...
A commonly seen practice among many slugs is apophallation, when one or both of the slugs chew off the other's penis. The penis of these species is curled like a cork-screw and often becomes entangled in their mate's genitalia in the process of exchanging sperm. Apophallation allows the slugs to separate themselves. Once the penis has been removed, the slug remains female for the rest of its life.
Various species of slug can also reproduce via tiny "darts" of sperm which they fling in the direction of their mate's genitalia.
