The Catasetinae is a subtribe within the Orchidaceae

Orchidaceae

The Orchidaceae, commonly referred to as the orchid family, is a morphologically diverse and widespread family of monocots in the order Asparagales. Along with the Asteraceae, it is one of the two largest families of flowering plants, with between 21,950 and 26,049 currently accepted species,...

. Its members are widespread in lowland tropical Central

Central America

Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

 and South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

 up to 1,500 meters. They are found on trees, stumps or old fence posts.

Catasetinae are exclusively pollinated by male euglossine

Euglossini

Euglossine bees, also called orchid bees, are the only group of corbiculate bees whose non-parasitic members do not all possess eusocial behavior. Most of the species are solitary, though a few are communal, or exhibit simple forms of eusociality...

 bee

Bee

Bees are flying insects closely related to wasps and ants, and are known for their role in pollination and for producing honey and beeswax. Bees are a monophyletic lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila...

s, which are attracted to the floral fragrances, and collect them. A particular Catasetinae species may attract only one or a few species of bees from the dozens that occur in the habitat.

Genera

• Catasetum
  Catasetum
  Catasetum, abbreviated as Ctsm in horticultural trade, is a genus of the Orchid family , subfamily Epidendroideae, tribe Cymbidieae, subtribe Catasetinae, with 166 species....
  
  (80-120 species)
• Clowesia
  Clowesia
  Clowesia is a genus of the Orchidaceae family. Species of this genus are epiphytic and contain many pseudobulbs with several interodes. The leaves of this plant are arranged alternatively in two vertical rows on opposite sides of the rachis. The Clowesia has a simple gullet flower that allows...
  
  (7 species)
• Cycnoches
  Cycnoches
  Cycnoches, abbreviated as Cyc. in the horticultural trade, is a genus of about 16 species of orchids native to tropical America.-List of species:*Cycnoches amparoanum Schltr. *Cycnoches aureum Lindl. & Paxton...
  
  (some 30 species)
• Dressleria
  Dressleria
  Dressleria is a genus of flowering plants from the orchid family, Orchidaceae.- References :*Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. . Genera Orchidacearum 1. Oxford Univ. Press....
  
  (10 species)
• Mormodes
  Mormodes
  Mormodes, abbreviated as Morm. in the horticultural trade, is a genus of exactly 70 species of terrestrial and epiphyte orchids native to Central America and South America.-List of species:...
  
  (some 70 species)

Three related genera – Cyrtopodium

Cyrtopodium

Cyrtopodium, often abbreviated Cyrt in horticulture, is a genus of more than 40 species of epiphytic and terrestrial orchids found from Florida and Mexico through Argentina...

, Galeandra

Galeandra

Galeandra, abbreviated as Gal in horticultural trade, is a genus of 20 species of orchids native to tropical America.-List of species:...

and Grobya

Grobya

Grobya is a genus of flowering plants from the orchid family, Orchidaceae.- References :*Pridgeon, A.M., Cribb, P.J., Chase, M.A. & Rasmussen, F. eds. . Genera Orchidacearum 1. Oxford Univ. Press....

– are sometimes separated as subtribe Cyrtopodiinae, sometimes included in the Catasetinae.