Kuwait
Land invertebrates known only from Kuwait include a scarab beetle Pentodon kuwaitense (annales.nhmus.hu), a darkling beetle Eurycaulus lilligi (p. 7 of naturkundemuseum-bw.de pdf file, an ant Monomorium buettikeri (p. 44 of Antbase 8 MB pdf file), and a disc web spider Oecobius alhoutyae (World Spider Catalog). A crab Leptochryseus (or Cleistostoma) kuwaitense (SpringerLink) and a snapping shrimp Alpheus lutosus (Univ. Amsterdam pdf file) are known only from the mudflats of Kuwait Bay. Marine species known solely from Kuwait include a mollusc Amphithalamus alphesboei (OBIS), a nematode worm Manunema kithara (NHM-London), and several polychaete worms including Kuwaita magna (p. 4 of MNHN pdf file), Perinereis kuwaitensis (OBIS), and Pkyh kubbarensis (Wiley InterScience).
A sea lavender Limonium failachicum (JSTOR) is the only endemic vascular plant.