''Mesarchaea'' is a genus of

spider Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and ran ...

s in the

Mecysmaucheniidae Mecysmaucheniidae is a family of araneomorph spiders first described by Eugène Simon in 1895. Most genera occur in South America (Chile and Argentina), with two genera endemic to New Zealand New Zealand () is an island country in the ...

family. It was first described in 1984 by Forster & Platnick. , it contains only one species, ''Mesarchaea bellavista'', found in

Chile Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...

References

Mecysmaucheniidae Monotypic Araneomorphae genera Spiders of South America Endemic fauna of Chile {{Araneomorphae-stub