page_title: Deroceras laeve
section_title: Description
hierarchical_section_title: Deroceras laeve / Description
caption_attribution_description: English: Drawing of the reproductive system of Deroceras laeve a - atrium v - vagina p - penis mr - musculus retractor penis bc - bursa copulatrix.
context_page_description: Deroceras laeve, the marsh slug, is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae.
context_section_description: The slug is from brown to dark brown, usually with dark and characteristic but not well visible spots arranged in groups. The shape is almost cylindrical, posterior end is abruptly widened. The mantle covers 50% of body length (unusually large). There are wrinkles on skin present (may disappear in preserved slugs). Mucus is thin, colourless.
  This slug is 15–25 mm long when preserved.
  The populations of this species that occur in Central Europe are much darker than other Deroceras species in that area.
  Reproductive system: Penis is often reduced, elongated if present, without proper penial gland but with two or more tiny glandular papillae and its end. Retractor is unforked and attached at half penis length, stimulator small, cone-shaped but looks more like a papilla. Tubular oviductus and atrium are unusually long. There is no rectal caecum.
caption: Drawing of the reproductive system of Deroceras laeve
  a - atrium
  v - vagina
  p - penis
  mr - musculus retractor penis
  bc - bursa copulatrix.
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