Type species

A type species () is the species considered to be permanently taxonomically associated with the name of a genus or subgenus, and that is used to identify it and distinguish it from others.

Version

v1 · 2026-09-28 · History

Domain-specific #

12675

Domain group

Natural Sciences

Origin domain

Biology & Ecology

Subdomains

Taxonomy, Zoological Nomenclature → Biology & Ecology

Core Idea

Type species is treated here as the recurring crossdomainmodelsstructuresrepresentations identity summarized by this source-grounded definition: A type species () is the species considered to be permanently taxonomically associated with the name of a genus or subgenus, and that is used to identify it and distinguish it from others. A type species () is the species considered to be permanently taxonomically associated with the name of a genus or subgenus, and that is used to identify it and distinguish it from others. In modern times, it is normally assigned when the genus or subgenus is first named.

Scope of Application

• Principles. The type species does not need to represent the most characteristic or average member of the group, as long as it allows its genus to be distinguished from the others.

• Principles. A similar concept is used for other taxonomic ranks: the type specimen is the sole representative of a species, while the type genus represents a family.

• In zoology. A type species is both a concept and a practical system that is used in the classification and nomenclature (naming) of animals.

• Other disciplines. In botanical nomenclature, scientific names also must be associated with a type according to the International Code of Nomenclature for algae, fungi, and plants for the same referential purpose.

• Other disciplines. In practice, however, there is a backlog of untypified names defined in older publications, when it was not required to specify a type.

Clarity

A clear use of Type species names the carrier, the operative relation, and the conditions under which the source treats the identity as present. The minimal definition is A type species () is the species considered to be permanently taxonomically associated with the name of a genus or subgenus, and that is used to identify it and distinguish it from others.

Manages Complexity

Type species compresses multiple crossdomainmodelsstructuresrepresentations details into a stable diagnostic relation. The source shows both the central mechanism—the term "type species" is regulated in zoological nomenclature by article 42.3 of the International Code of Zoological Nomenclature, which defines a type species as the name-bearing type of the name of a genus or subgenus (a "genus-group name").—and the practical consequence—it serves to anchor the name of the.

Abstract Reasoning

1. Type the carrier. Identify the crossdomainmodelsstructuresrepresentations entities to which the claim applies.
2. State the relation. Use the source-grounded identity: A type species () is the species considered to be permanently taxonomically associated with the name of a genus or subgenus, and that is used to identify it and distinguish it from others.
3. Check operation and conditions. The concept of the type species in zoology was introduced by Pierre André Latreille.
4. Demand recognition evidence.

Knowledge Transfer

Within the home domain. Knowledge about Type species transfers literally when a new case preserves the same carrier type, relation, and recognition test. The type species does not need to represent the most characteristic or average member of the group, as long as it allows its genus to be distinguished from the others. A similar concept is used for other taxonomic ranks: the type specimen is the sole representative of a species, while the type genus represents a family. Beyond the home domain. No canonical.

Neighborhood in Abstraction Space

Type species sits in a sparse region of the domain-specific corpus (78^th percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.

Family — Biological & Ecological Classification (12 abstractions)

Nearest neighbors

• Numerical taxonomy — 0.87
• Phylogenetic nomenclature — 0.84
• Umbrella species — 0.84
• Referring expression — 0.82
• Ecological Classification — 0.82

Computed from structural-signature embeddings · 2026-10-08