Mecysmaucheniidae is a family of araneomorph spiders first described by Eugène Simon in 1895.

[1] As of March 2019[update], the World Spider Catalog accepts the following genera:[1] Grismado, CJ; Ramírez, MJ (2005).

"Nuevas especies de la familia Mecysmaucheniidae (Araneae) de Chile y Argentina (Spanish, with pictures) (Mecysmauchenius platnicki)".

"Mecysmaucheniid spiders strike prey with lightning speed, scientists find".

This article related to araneomorph spiders is a stub.