| Philinopsis capensis | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Cephalaspidea |
| Family: | Aglajidae |
| Genus: | Philinopsis |
| Species: | P. capensis |
| Binomial name | |
| Philinopsis capensis Pease, 1860 | |
| Synonyms [1] | |
Doridium capenseBergh, 1907 superseded combination Contents | |
Philinopsis capensis, the slipper slug, is a species of sea slug, a shell-less opisthobranch gastropod mollusc in the family Aglajidae. [1]
The length of the species is at least 40 mm. [2]
(Original description) The species measures 5 cm in length from head to the tips of the posterior wings, with a breadth (including raised foot-lobes) of 1.8 cm and a height of 1.9 cm. The anterior shield is 2.2 cm long, with its posterior edge projecting freely by 6 mm. The wings of the posterior shield are 10 mm long. The foot is 13 mm wide, with wings extending 8 mm high, and the tail measures 8 mm in length.
The animal is nearly uniformly grayish-white, though it was likely darker when alive. The underside of the anterior shield, the neck beneath it, and the body sides are blackish. The inner margins of the foot-lobes on the posterior wings are also blackish, though fainter on the outer side. The large gill is white, while the foot is grayish with a black anterior end. The overall form is typical, with a somewhat elongated anterior shield and wing-like lobes on the posterior shield, which project downward with the tips turned slightly inward. The right wing appears slightly larger than the left, and no flagellum is present. The upper side of the animal is entirely smooth. The large gill projects almost completely out of the gill cavity, measuring 8 mm wide by 6 mm high and composed of 10 large tufts of lamellae, with its end slightly rolled.
The shell is membranous with a faint yellowish tint, and only the small nuclear portion shows slight calcification. The main whorl does not appear to extend toward the base of the right wing. The shell measures 13 mm in length by 7 mm in width.
The mouth tube is 6 mm long and black on both the outside and inside. The "bulbus pharyngeus" measures 14 mm in length, with a height of 9 mm and a width of 8 mm. It is yellowish-white both internally and externally, with the usual rounded prismatic form and structure, and walls of the arrow-shaped cavity are 0.25–0.3 mm thick. The liver is yellowish gray. The penis is yellowish and black in front. [3]
The body has a mottled brown-black and cream appearance, covered with white or yellow spots. The posterior end features two tails of equal length. The body is composed of three joined segments. [2]
The species is mottled brown-black on the exterior, with a cream or opaque color on the interior. [2]
This marine species is endemic to South Africa and occurs off False Bay to East London. [2]
The Spanish dancer, scientific name Hexabranchus sanguineus, is a dorid nudibranch, a very large and colorful sea slug, a marine gastropod mollusk in the family Hexabranchidae.The taxonomy of the genus Hexabranchus has been controversial but a thorough molecular and morphological study published in 2023 showed that the name H. sanguineus was being used for at least 5 distinct species.
Chromodoris elisabethina is a species of very colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.
Goniobranchus geminus, also known as the gem sea slug, is a species of very colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.
Nembrotha cristata is a species of colourful sea slug, a polycerid nudibranch, a marine gastropod mollusk in the family Polyceridae. This species of sea slug is black with green markings; adults are around 50 mm long, and they live on rock or coral reefs in the tropical Indo-West Pacific Ocean.
Pleurobranchaea bubala, the warty pleurobranch, is a species of sea slug, specifically a sidegill slug or notaspidean. It is a marine gastropod mollusc in the family Pleurobranchaeidae.
Philine aperta, the sand slug, is a species of predatory sea slug with an internal shell, a cephalaspid opisthobranch, or head-shield slug. It is a marine gastropod mollusc in the family Philinidae.
The Cape dorid is a species of sea slug, a dorid nudibranch. It is a marine gastropod mollusc in the family Chromodorididae.
The crowned nudibranch is a species of dorid nudibranch. It is a marine gastropod mollusc in the family Polyceridae.
The black nudibranch is a species of colorful sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Polyceridae. This species is endemic to South Africa.
Philiopsis is a genus of often colorful, medium-sized sea slugs, marine opisthobranch gastropod mollusks. These are not nudibranchs; instead they are headshield slugs, in the clade Cephalaspidea.
Aldisa albatrossae is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Cadlinidae.
Halgerda carlsoni is a species of sea slug, a dorid nudibranch, shell-less marine gastropod mollusks in the family Discodorididae.
Hypselodoris carnea is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.
Hypselodoris peasei is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.
Hypselodoris nigrolineata is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.
Berghia stephanieae is a species of sea slug, an aeolid nudibranch. It is a marine gastropod mollusc in the family Aeolidiidae. It was previously known as Aeolidiella stephanieae.
Tubulophilinopsis gardineri, the Gardiner’s philinopsis, or Gardiner's headshield slug is a species of sea slug, a shell-less opisthobranch gastropod mollusc in the family Aglajidae. It is native to the Indo-Pacific region.
Philinopsis depicta is a species of sea slug, an opisthobranch gastropod mollusc in the family Aglajidae. It is native to the Mediterranean Sea where it lives on the sandy seabed in shallow water. It is a predator.
Aglaja tricolorata is a species of sea slug, an opisthobranch gastropod mollusc in the family Aglajidae. It is native to the Mediterranean Sea and the tropical eastern Atlantic Ocean where it lives in shallow water on the sandy seabed.
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