Black-bellied Thorntail
- kingdom: Animalia
- phylum: Chordata
- class: Aves
- order: Apodiformes
- family: Trochilidae
- genus: Discosura
- species: Discosura langsdorffi
Alta Floresta- Chapada dos Guimarães
Mato Grosso- Nova Friburgo
Rio de Janeiro
Brazil
Trompeteros
Loreto- Calzada
San Martín
Peru
Maroa
Amazonas
Venezuela
Inírida