Aglaiocercus

Taxobox
name = "Aglaiocercus"

---

image_caption = Long-tailed Sylph
regnum = Animalia
phylum = Chordata
classis = Aves
ordo = Apodiformes
familia = Trochilidae
genus = "Aglaiocercus"
genus_authority = Zimmer 1930
subdivision_ranks = Species
subdivision = "Aglaiocercus berlepschi""Aglaiocercus coelestis""Aglaiocercus kingi"

"Aglaiocercus" is a genus of hummingbird in the family Trochilidae. It contains the following species:

* Long-tailed Sylph, "Aglaiocercus kingi"
* Violet-tailed Sylph, "Aglaiocercus coelestis"
* Venezuelan Sylph, "Aglaiocercus berlepschi"