Parent: Thraupidae (Tanagers)

└─ Geospiza

└─── Geospiza conirostris (Large cactus finch)

└─── Geospiza difficilis (Sharp-beaked ground finch)

└─── Geospiza fortis (Medium ground finch)

└─── Geospiza fuliginosa (Small ground finch)

└─── Geospiza magnirostris (Large ground finch)

└─── Geospiza scandens (Common cactus finch)