''Mesarchaea'' is a genus of

spiders Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species dive ...

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. Genera , the World Spider Catalog The World Spide ...

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 the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

References

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