''Morula lepida'' (from Latin ''lepida'': elegant, fine) is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Muricidae Muricidae is a large and varied taxonomic family of small to large predatory sea snails, marine gastropod mollusks, commonly known as murex snails or rock snails. With over 1,700 living species, the Muricidae represent almost 10% of the Neog ...

, the murex snails or rock snails.

Description

The squamous shell is medium-sized for the genus, attaining a length of up to 15 mm at maturity. The

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spire ...

sits high with 2.5+ partly broken

protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called " ...

whorls. The

teleoconch The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium ...

has up to 6 elongated whorls and impressed sutures. The protoconch is smooth and conical. The axial sculpture consists of moderately high, rounded ribs with about 8–9 on the first and fourth teleoconch whorls, 8 on the second and third whorls and 9–11 on the fifth and sixth whorls. The spiral sculpture consists of numerous, narrow, squamous cords of about the same size. The last teleoconch whorls has 26-28 such cords with 2 or 3 on its abapical part being slightly larger. The aperture is ovate with a fully adherent columellar lip that is smooth apart from 2 or 3 small abapical nodules. The anal notch is shallow and broad. Furthermore, the outer lip is minutely crenulate with 5 nodules within. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water i ...

is very short and open. The shell's colour can be described as creamy-white, light tan or light mauve, with the broader spiral cords on the abapical part of the last teleoconch whorl being paler. The aperture is (light) pink or a pinkish-violet. At the time of the first description of the species (1995) the existence of an operculum and a radula were unknown.

Distribution

This marine species occurs off

New Caledonia New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t ...

, Loyalty Ridge, the Midway and

Hawaiian Islands The Hawaiian Islands () are an archipelago of eight major volcanic islands, several atolls, and numerous smaller islets in the Pacific Ocean, North Pacific Ocean, extending some from the Hawaii (island), island of Hawaii in the south to nort ...

as well as

Papua New Guinea Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean n ...

References

lepida Gastropods described in 1995 {{Ergalataxinae-stub