''Semysmauchenius'' is a genus of spiders 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 Chilean species, ''Semysmauchenius antillanca''.

References

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