External morphology and anatomy of Pseudunela marteli is the same as in Pseudunela viatoris with the following exceptions:
Colour of digestive gland is greenish or orange-brownish.
Eyes (30–35 µm) are pigmented and well visible externally.
Foot length is up to half of the visceral hump.
Subepidermal spicules are more abundant in cephalic tentacles, foot and visceral hump.

digestive system: the radula formula is 57–59×1.1.?;
rhachidian tooth with 3–4 denticles per side.

reproductive system: the hollow curved penial stylet measures 130 µm in length, the stylet of basal finger is 30 µm long.
The ampulla is sac-like; allosperm receptacles are absent in the examined specimen.
The albumen and mucus glands are tubular; the membrane gland is sac-like.
External morphology and anatomy of Pseudunela marteli is the same as in Pseudunela viatoris with the following exceptions:
Colour of digestive gland is greenish or orange-brownish. Eyes (30–35 µm) are pigmented and well visible externally. Foot length is up to half of the visceral hump. Subepidermal spicules are more abundant in cephalic tentacles, foot and visceral hump.
digestive system: the radula formula is 57–59×1.1.?; rhachidian tooth with 3–4 denticles per side.
reproductive system: the hollow curved penial stylet measures 130 µm in length, the stylet of basal finger is 30 µm long. The ampulla is sac-like; allosperm receptacles are absent in the examined specimen. The albumen and mucus glands are tubular; the membrane gland is sac-like.
Pseudunela marteli