Lobiger cf. souverbii Fisher, 1856
|Maximum size: 32 mm.
distinctive species is brilliant green with elongate, frilled
lobes projecting from the edges of its parapodia. Bright blue spots
connected by dark blue-green lines show through its transparent shell.
Lobiger cf. souverbii
is a rarely seen species found in tide pools and shallow rocky habitats
at depths of
< 1 to 6
m (< 3 to 20 ft) where it is associated with various algae of the
genus Caulerpa. It is found
to exposed locations. Mature animals are diurnally active but may
remain in the open when resting at night. When disturbed, they "flare"
the mantle lobes, presumably to elicit a startle response in predators,
and may autotomize the lobes. They can also emit a milky fluid. We have observed them feeding on Caulerpa taxifolia, Caulerpa ceratularioides, Caulerpa serrulata and the large
form of Caulerpa racemosa in
dishes. (Note 1) The egg mass
is a tightly coiled, cream spiral and the eggs hatch in about five days in the laboratory.
Maui, Oahu and Midway: possibly circumtropical.
authors use Lobiger viridis
Pease, 1863 for the Indo-Pacific population (see the Sea Slug Forum
further discussion). It's possible that the Pacific and Atlantic
populations may ultimately be found to be distinct.
8.5 mm: Hekili Point, Maui; Oct. 7, 2002.
Observations and comments:
A captive animal with a shell length of 1.8 mm and a missing mantle
lobe regenerated the lobe and grew to a shell length of 5.2 mm in 60
days. It was fed primarily on Caulerpa