Deroceras (Deroceras) barceum (Gambetta, 1889)
Look alikes:
Deroceras chrysorroyatissensis.
Morphology:
External: Gray-cream to brownish body with tiny dark spots in skin grooves (Wiktor 2000).
Internal: Rounded penis with glandular tissue on one side; cylindrical appendix on penis, and gland beside it; vas deferens and muscular retractor attached to center of penial gland; gland very large with three papillate branches from a single trunk, with longest branch about penis length; conical, striated stimulator in base of penis; small rectal caecum (Wiktor 2000).
Size:
To 28 mm long (Wiktor 2000).