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Selenopidae
(Flatties)

The spider family Selenopidae, commonly known as Flatties, have been sighted 48 times by contributing members. Based on collected data, the geographic range for Selenopidae includes 1 countries and 3 states in the United States. Selenopidae is most often sighted outdoors, and during the month of April.

Taxonomic Hierarchy

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Suborder: Araneomorphae
  • Family: Selenopidae

Other Common Names

Flatties, Wall Crab Spiders, Wall Spiders, Crack Spiders

Author

Simon,1897

Sightings Overview

There have been 48 confirmed sightings of Selenopidae (Flatties), with the most recent sighting submitted on December 6, 2025 by Spider ID member theguyincognito. The detailed statistics below may not utilize the complete dataset of 48 sightings because of certain Selenopidae sightings reporting incomplete data.

  • Web: 4% of the time, Selenopidae spiders are sighted in a spider web (Sample size: 47)
  • Sex: 0 female and 13 male.
  • Environment: Selenopidae has been sighted 27 times outdoors, and 22 times indoors.
  • Outdoors: Man-made structure (22). High foliage (3). Under rock or debris (1). Freshwater river, lake, stream (1).

Location and Range

Selenopidae (Flatties) has been sighted in the following countries: United States.

Selenopidae has also been sighted in the following states: Arizona, Florida, Maryland.

Seasonality

Selenopidae has been primarily sighted during the month of April.

  • January: 2
  • February: 4
  • March: 9
  • April: 12
  • May: 10
  • June: 5
  • July:
  • August:
  • September:
  • October:
  • November: 1
  • December: 4


Genus: Selenops (Flatties)

Selenops radiatus
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