Calliostoma bonita is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of sea snail

Sea snail

Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....

, a marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusk in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Calliostomatidae

Calliostomatidae

Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.- Description :The Calliostomatidae are unusually diverse. They are characterized by a stepped spire and a pointy aperture. They may possess or lack an umbilicus. The columella is sometimes...

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Description

The shell has a concave shoulder with a strong carination. Overall the shell is light brown to tan in color, with a bright purple channel at the edge of the inner lip. The sculpture consists of smooth spiral threads which show darker brown spots. Average size: height 23 mm, diameter 24 mm. Compare with the similar Calliostoma palmeri

Calliostoma palmeri

Calliostoma palmeri is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.-Description:The shell of this species is very similar to that of Calliostoma bonita, but there are a few recognizable differences. The shell reaches a larger size and appears more squat than...

. Despite the range overlap there is no known intergradation between Calliostoma palmeri and C. bonita and the two species are considered to be distinct but closely related, making them sibling species

Sibling species

Sibling species are species that are very similar in appearance, in behavior and in other characteristics, but they are reproductively isolated. In other words, sibling species are pairs or groups of genetically closely related species which are often morphologically indistinguishable, but are...

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Distribution

This is a Panamic Province species which generally occurs from Mazatlan

Mazatlán

Mazatlán is a city in the Mexican state of Sinaloa; the surrounding municipio for which the city serves as the municipal seat is Mazatlán Municipality. It is located at on the Pacific coast, across from the southernmost tip of the Baja California peninsula.Mazatlán is a Nahuatl word meaning...

, Mexico

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 to Acapulco

Acapulco

Acapulco is a city, municipality and major sea port in the state of Guerrero on the Pacific coast of Mexico, southwest from Mexico City. Acapulco is located on a deep, semi-circular bay and has been a port since the early colonial period of Mexico’s history...

, Mexico, and is found subtidally in deep water from 37 to 73 m.