Common name

Definition

A vernacular designation for a taxon or organism, expressed in everyday language rather than formal nomenclature. In entomology and natural history, common names facilitate communication with non-specialists and the public, though they vary regionally, may apply to multiple species, and lack the stability and universality of scientific names. Many insect common names describe appearance (e.g., 'red-tailed bumble bee'), behavior ('praying mantis'), or habitat ('field cricket'), but others are misleading ('white ant' for termites).

Etymology

From Middle English 'commune' (shared by all) + 'name' (word designating something), referring to ordinary speech rather than learned Latin.

Example

The butterfly Vanessa cardui is known by the common name 'painted lady' in English, but regional names include 'thistle butterfly' and 'cosmopolitan'; meanwhile, 'cabbage white' refers to Pieris rapae in North America and sometimes Pieris brassicae in Europe, illustrating how common names can be ambiguous.

Synonyms

• vernacular name

Related Terms

• Scientific name
• Binomial nomenclature
• Type specimen
• synonym
• homonym
• trivial name

Usage Notes

Common names are not governed by nomenclatural codes and may be unofficial, multiple per species, or shared across species. Specialists prefer scientific names in formal contexts to avoid ambiguity. Some common names are standardized by national or regional societies (e.g., Entomological Society of America), but these remain local conventions rather than universal rules. Contrast with 'trivial name,' which in strict nomenclature refers specifically to the species epithet in a binomial.