Cyathostoma

Cyathostoma

(sī'ă-thos'tō-mă),
One of three genera of gapeworms of poultry and other birds in the nematode family Syngamidae, so called because of the gaping habit of fowl infected by these upper respiratory tract parasites.
[G. kyathos, cup, cup-shaped, + stoma, mouth]

Cyathostoma

a genus of the roundworm family Syngamidae. Includes Cyathostoma bronchialis, C. brantae, C. lari, C. variegatum (birds, respiratory tract).