Invertebrates restricted to Sint Eustatius include the crickets Cycloptilum eustatiensis
(OSF) and Cyrtoxipha
orientalis (OSF), a pseudoscorpion Pachyolpium confusum (p. 4 of Naturalis pdf file), and a land snail Glyphyalus quillensis (Naturalis).
Plants known only from Sint Eustatius are the Statia Morning Glory Ipomoea sphenophylla (DCNA) (Plants of the Eastern Caribbean) and the recently described Gonolobus aloiensis (DCNA).
Sint Eustatius is included in the Caribbean Islands biodiversity hotspot (CEPF) and is a special municipality of the Netherlands.