
Dusky Arion Slugs (Mating) - Arion subfuscus
Arion slugs are hermaphrodites, and they can reproduce either by self- or cross-fertilization, depending upon conditions. When two slugs mate with each other, they exchange sperm with their protruding genitalia. If their sex organs become entangled, the slugs will simply bite them off in order to free themselves. From then onward, the emasculated slugs will only able to reproduce as females.
Habitat: Mixed forest

Arion fuscus, also known as the "Dusky Arion", is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.
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Posted 6 years ago
Posted 6 years ago, modified 6 years ago
Posted 6 years ago