British Indian Ocean Territory
Ocean Territory comprises the islands of the Chagos Archipelago and is
an overseas territory of the United
Kingdom. It is part of the
Maldives-Lakshadweep-Chagos Archipelago Tropical Moist Forests
and part of the Northern Indian Ocean coral reef hotspot (Columbia Univ. pdf file). An overview of the
natural history of the territory is
provided by the JNCC (JNCC
Marine fish unique to the territory include the Chagos Anemonefish Amphiprion chagosensis (ARKive), the recently described Chagos Dottyback Chlidichthys chagosensis (FishBase), a wormfish Paragunnellichthys fehlmani (Internet Archive), and the gobies Trimmatom offucius (FishBase) and Trimma dalerocheila (eol).
Endemic land invertebrates include the St. Valentine's Day Moth Stictoptera hironsi (PPDRDG), the grass moths Sufetula chagosalis (fig. 6 at Internet Archive) and Lamprosema salomonalis (fig. 10 at Internet Archive), a subspecies of the Meadow Argus Butterfly Junonia villida chagosensis (colnect), a cricket Scottiola chagosensis (fig. 10 at Internet Archive), and a chalcid wasp Stibula insularis (UCR pdf file) . The insects of Diego Garcia are described at (Smithsonian pdf file). Isopod crustaceans described from the Chagos include Eurydice humilis (fig. A at BHL), Apanthura xenocheir (fig. B at BHL), and Gigantione rathbunae (fig. A at BHL). Marine molluscs known only from the British Indian Ocean Territory include Nymph’s Cowrie Erronea nymphae (Eddie Hardy) and the margin shells Prunum chagosi (MNHN) and Marginella henrikasi (Eddie Hardy).