Pseudunela marteli

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Pseudunela marteli
A beige sea slug
A live Pseudunela marteli.
dg - digestive gland,
oo - oocyte.
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Family: Pseudunelidae
Genus: Pseudunela
Species:
P. marteli
Binomial name
Pseudunela marteli
Neusser, Jörger & Schrödl, 2011[1]

Pseudunela marteli is a species of sea slug, an acochlidian, a shell-less marine gastropod mollusc in the family Pseudunelidae.

The specific name marteli is in honour of author's "big-hearted friend and colleague" biologist Martin “Martl” Heß from LMU Munich, because the species has a large heart-bulb.[1]

Pseudunela marteli is known from Guadalcanal, Solomon Islands, and Oyster Island, Vanuatu.[1] The type locality is beach of “Art Gallery”, Honiara, Guadalcanal, Solomon Islands.[1]

Description

External morphology and anatomy of Pseudunela marteli is the same as in Pseudunela viatoris with the following exceptions:[1] Colour of digestive gland is greenish or orange-brownish.[1] Eyes (30–35 μm) are pigmented and well visible externally.[1] Foot length is up to half of the visceral hump.[1] Subepidermal spicules are more abundant in cephalic tentacles, foot and visceral hump.[1]

digestive system: the radula formula is 57–59×1.1.?; rhachidian tooth with 3–4 denticles per side.[1]

reproductive system: the hollow curved penial stylet measures 130 μm in length, the stylet of basal finger is 30 μm long.[1] The ampulla is sac-like; allosperm receptacles are absent in the examined specimen.[1] The albumen and mucous glands are tubular; the membrane gland is sac-like.[1]

Photo of a dorsal view of a live Pseudunela marteli. Body size is 3 mm.
lt – labial tentacle,
rh – rhinophore,
ey – eye,
hb – heart bulb,
f – foot,
vh – visceral hump.

Ecology

References

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