| Scientific Name | TSN | Taxon Author | Common Name | Name Source | Usage | Reason (ITIS) | Taxon Rank |
|---|
| Calcarius lapponicus | 179526 | (Linnaeus, 1758) | Escribano ártico Lapland Longspur bruant lapon | ITIS | valid | | Species |
| Calcarius mccownii | 179525 | (Lawrence, 1851) | McCown's Longspur Escribano de McCown | ITIS | valid | | Species |
| Calcarius ornatus | 179530 | (Townsend, 1837) | Chestnut-collared Longspur Escribano collar castaño | ITIS | valid | | Species |
| Calcarius pictus | 179529 | (Swainson, 1832) | Smith's Longspur bruant de Smith | ITIS | valid | | Species |
