Pterocnemia

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Definition

Noun: 1. A genus of flightless birds: Pterocnemia is a genus of large, flightless birds belonging to the family Rheidae, which also includes the better-known rhea. Birds in this genus are native to South America.

Usage Notes
  • "Pterocnemia" is a scientific, taxonomic term used primarily in zoology and ornithology. It is not used in everyday conversation.
  • It is always capitalized as it is a proper noun (a genus name).
  • In modern taxonomy, the genus is often considered synonymous with . The species formerly classified as is now commonly referred to as (the lesser rhea or Darwin's rhea).
Examples
  • The Pterocnemia, or lesser rhea, inhabits the alpine and steppe regions of South America.
  • A study compared the skeletal structure of Pterocnemia to that of the greater rhea ().
  • The genus Pterocnemia was first described in the 19th century.
Advanced Usage
  • In taxonomic hierarchy: The term is used to specify a particular grouping within biological classification.
    • The family Rheidae contains two genera: Rhea and Pterocnemia.
Variants and Related Words
  • Rhea (n): The broader genus name now commonly used to include both the greater and lesser rhea species.
  • Lesser rhea (n): The common name for the species , formerly .
  • Darwin's rhea (n): Another common name for the lesser rhea.
  • Ratite (n): The larger group of flightless birds to which rheas (and thus ) belong, including ostriches, emus, cassowaries, and kiwis.
Synonyms
  • (As a common referent) Lesser rhea, Darwin's rhea.
  • (In modern taxonomy) (specifically ).
Different Meanings

This word has only one specific meaning as a zoological genus name. It does not have different meanings in general English usage.

Noun
  1. a genus of birds of the family Rheidae

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