Liocranidae

Sac spiders
Temporal range:
Rhaeboctesis transvaalensis from South Africa
Egg sac of Agroeca brunnea
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Liocranidae
Simon, 1897
Diversity
34 genera, 296 species
blue: reported countries (WSC)
green: observation hotspots (iNaturalist)


Liocranidae is a family of araneomorph spiders first described by Eugène Simon in 1897.[1] They are one of several groups called "sac spiders".

The holarctic genus Agroeca is the best-known, but it also includes various genera of more obscure spiders that still lack a diagnosis.

Two species in the North American genus Neoanagraphis are found in the extremely dry conditions in the Mojave, Sonoran and Chihuahuan deserts.

Females live in animal burrows while males wander and are the ones most often caught in pitfall traps.

Genera

As of October 2025, this family includes 35 genera:[2]

See also

References

  1. ^ Simon, E. (1897). Histoire naturelle des araignées. doi:10.5962/bhl.title.51973.
  2. ^ "Family: Liocranidae Simon, 1897". World Spider Catalog. doi:10.24436/2. Retrieved 2025-10-07.