Psilopogon
Psilopogon is a genus of Old World barbets that used to include only a single species, the fire-tufted barbet. Results of molecular phylogenetic analyses indicate that the genus is nested within an evolutionary branch consisting of Asian barbets that were formerly placed in the genus Megalaima proposed by George Robert Gray in 1841. Since Psilopogon was proposed by Salomon Müller already in 1835, this name takes priority.
The name Psilopogon combines the Ancient Greek psilos meaning "bare" and pōgōn meaning "beard".
Taxonomy
The type species of Psilopogon is the fire-tufted barbet proposed by Salomon Müller in 1835, who described a male barbet collected in Sumatra.In the 19th and 20th centuries, about 19 generic names were proposed for Asian barbet species in collections of natural history museums, including Megalaima by George Robert Gray in 1849 and Mezobucco by George Ernest Shelley in 1889.
Molecular phylogenetic research of Asian barbets revealed that the Megalaima species form a clade, which also includes the fire-tufted barbet. Barbets formerly placed in Megalaima were therefore reclassified under the genus Psilopogon, which now contains the following 32 species:
| Species | Image | Distribution |
| Fire-tufted barbet | Peninsular Malaysia and Sumatra | |
| Coppersmith barbet | from Pakistan to the Philippines and Indonesia | |
| White-cheeked barbet | Western Ghats and adjoining hills | |
| Great barbet | northern India, Nepal and Bhutan, Bangladesh and some parts of Southeast Asia, as far east as Laos | |
| Brown-headed barbet | Western Ghats and hilly parts of southern peninsular India | |
| Crimson-fronted barbet | Sri Lanka | |
| Blue-throated barbet | Indian subcontinent and Southeast Asia | |
| Lineated barbet | West Bengal and Bangladesh | |
| Yellow-fronted barbet | Sri Lanka | |
| Black-banded barbet | Java and Bali | |
| Yellow-eared barbet | Java and Bali | |
| Flame-fronted barbet | Java and Bali | |
| Golden-whiskered barbet | Brunei, Indonesia, Malaysia, Thailand, Borneo and Sumatra | |
| Red-throated barbet | Myanmar, Thailand, Malaysia, Singapore, Indonesia, Brunei | |
| Black-eared barbet | Peninsular Malaysia, Sumatra and Borneo | |
| Green-eared barbet | southern China, Cambodia, Laos, Thailand and Vietnam | |
| Brown-throated barbet | western Java | |
| Yellow-crowned barbet | Brunei, Indonesia, Malaysia, Singapore, and Thailand | |
| Black-browed barbet | Sumatra and the Malay Peninsula | |
| Red-crowned barbet | Brunei, Indonesia, Malaysia, Myanmar, Singapore, and Thailand | |
| Golden-throated barbet | Nepal, India, Bhutan, Myanmar, Thailand, Malaysia, Laos, Vietnam and mainland China | |
| Blue-eared barbet | northeast India and Bangladesh to peninsular Thailand | |
| Malabar barbet | Western Ghats from around Goa south to southern Kerala | |
| Taiwan barbet | Taiwan | |
| Red-vented barbet | Cambodia, Laos and Vietnam | |
| Chinese barbet | southern China | |
| Moustached barbet | Myanmar, Thailand, Cambodia, Laos and Vietnam | |
| Golden-naped barbet | Indonesia and Malaysia | |
| Mountain barbet | Borneo | |
| Bornean barbet | Indonesia and Malaysia, Borneo | |
| Necklaced barbet | southern Laos and Vietnam | |
| Indochinese barbet | Laos, Vietnam and Cambodia | |
| Turquoise-throated barbet | Thailand |