Parent: Boa (Boas)

└─ Boa constrictor (Boa constrictor)

└─── Boa constrictor amarali

└─── Boa constrictor constrictor

└─── Boa constrictor imperator

└─── Boa constrictor longicauda

└─── Boa constrictor mexicana

└─── Boa constrictor nebulosa

└─── Boa constrictor occidentalis

└─── Boa constrictor orophias

└─── Boa constrictor ortonii

└─── Boa constrictor sabogae