United States Virgin Islands
Reptiles found nowhere else include the St. Croix Dwarf Gecko Sphaerodactylus beattyi (Mel J. Rivera), the St. Croix Anole Anolis acutus (Reptile Database), the St. Croix Ground Lizard Ameiva polops (ARKive), and the extinct St. Croix Racer (caribherp).
The Virgin Islands Robber Frog or Mute Frog Eleutherodactylus lentus (ARKive) is an endemic amphibian.
A basslet Liopropoma (or Flagelloserranus) danae (FishBase)
is a marine fish known only from the type locality.
Insects unique to the U.S. Virgin Islands include a leaf beetle
Homoschema pingue (Harvard), a stick insect Heteronemia bradypus (Phasmida),
a tumbling flower beetle Mordellistena irfianorum (IngentaConnect), a cricket Hapithus crucensis (p. 4 of MNHN pdf file),
and a termite Neotermes intracaulis (BioOne). Other endemic invertebrates include a goblin spider Heteroonops croix (AMNH), an anapid spider Anapisona bordeaux (p. 3 of AAS pdf file), a pseudoscorpion Bituberochernes jonensis (Florida Entomologist), a centipede Cormocephalus impulsus (CHILOBASE), and a springtail Calx neryi (UPRM).
Vascular plants species known exclusively from the U.S. Virgin Islands include Egger’s Agave Agave eggersiana (Wikipedia), the Marron Bacora Solanum conocarpum (CBD), Earhart’s Stopper Eugenia earhartii (NYBG), and the Cowhage Cherry Malpighia infestissima (flickr).
An overview of the natural history of
this territory of the United States of America is provided in "A Comprehensive Wildlife Strategy for the U.S. Virgin Islands" (USVI Division of Fish and Wildlife).