unique to Saint
Vincent include the national bird, the Saint Vincent Amazon (ARKive),
and an endemic genus, the Whistling Warbler (Neotropical
The Garifuna Big-eared Bat Micronycteris garifuna (Mongabay) is a recently described mammal unique to Saint Vincent. The Saint Vincent Pygmy Rice Rat Oligoryzomys victus (Wikipedia) (NHM-London) is believed extinct.
Reptiles found only in Saint Vincent include Cook’s Tree Boa Corallus cookii (p. 1 of snre.ufl.edu pdf file), the Saint Vincent Blacksnake Chironius vincenti (p. 10 of Michael L. Treglia pdf file), the Saint Vincent Tree Anole Anolis griseus (SHNLH), the Saint Vincent Bush Anole Anolis trinitatus (Saumfinger.de), and the Bequia Dwarf Gecko Sphaerodactylus kirbyi and the recently described Grenadines Clawed Gecko Gonatodes daudini (both at caribherp).
The Saint Vincent Frog Eleutherodactylus (or Pristimantis) shrevei (caribherp) is the sole endemic amphibian.
An endemic genus of clingfish Gymnoscyphus ascitus (Google Books) is known only from off Saint Vincent.
Among over 100 species of beetles restricted to Saint Vincent (Univ. Nebraska pdf file) are a longhorned beetle Tethlimmena basalis (fig. 4 at Internet Archive), an ant-loving beetle Rybaxis geminata (Harvard), a darkling beetle Lorelopsis pilosus (fig. 7 at Internet Archive), a false blister beetle Oxycopsis frontalis (fig. 13 at Internet Archive), a masked chafer Cyclocephala vincentiae (Bio-Nica pdf file), a narrow-waisted bark beetle Serrotibia obrieni (p. 44 of Entomotropica pdf file), and a weevil Peridinetus silacea (p. 3 of Zootaxa pdf file). Other endemic invertebrates include a hairstreak Pseudolycaena cybele (Butterflies of America), a skipper Chiomara vincenta (Butterflies of America), a grasshopper Nesonotus superbus (OSF), a wasp Zethus woodruffi (fig. 1 on p. 4 of Univ. Nebraska-Lincoln pdf file), a scorpion Tityus pictus (p. 5 of Euscorpius pdf file), a tarantula Tapinauchenius sanctivincenti (BirdSpiders.com), a goblin spider Simonoonops princeps (AMNH), the jumping spiders Stoidis pygmaea (Salticidae of the World) and Corythalia metallica (Salticidae of the World), and the land snails Plekocheilus aurissileni (SHNLH) and Simpulopsis vincentina (fig. 65 & 66 at Google Books). Saint Vincent's most distinctive endemic is a freshwater sea slug Tantulum elegans that is the sole member of the family Tantulidae (Internet Archive).
The vascular plant species found nowhere else include a cactus Selenicereus innesii (Desert Tropicals), Begonia pensilis (SHNLH), Lobelia brigittalis (SHNLH), Tibouchina cistoides (Picasa), a bromeliad Pitcairnia sulphurea (SHNLH), Acalypha vincentina (Plants of the Eastern Caribbean), Gonolobus youroumaynensis (Google Books), Solanum urens (Plants of the Eastern Caribbean), Rudgea vincentina (JSTOR), Vernonia (or Lepidaploa) pallescens (fig. 3 at BHL), Odontocarya smithiorum (JSTOR), Besleria elongata (JSTOR), and the ferns Acrostichum (or Elaphoglossum) smithii (JSTOR) and Pteris longibrachiata (JSTOR).
Saint Vincent is part of the Caribbean Islands biodiversity hotspot (CI). For an overview of the biota see the "Third National Biodiversity Report" (CBD pdf file).