Thomisidae
(Crab Spiders)

Taxonomic Hierarchy

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

Common Name (AAS)

Crab Spiders

Author

Carl Jakob Sundevall, 1833

Sightings Overview

There have been 270 confirmed sightings of Thomisidae (Crab Spiders), with the most recent sighting submitted on November 8, 2025 by Spider ID member micah2419. The detailed statistics below may not utilize the complete dataset of 270 sightings because of certain Thomisidae sightings reporting incomplete data.

• Web: 8% of the time, Thomisidae spiders are sighted in a spider web (Sample size: 270)
• Sex: 17 female and 32 male.
• Environment: Thomisidae has been sighted 166 times outdoors, and 127 times indoors.
• Outdoors: Man-made structure (52). On flower (41). Low foliage (30). High foliage (13). Ground layer (16). Under rock or debris (3). Freshwater river, lake, stream (3). Open field, pasture, grassland (3). Forest (4). Desert area (1).

Location and Range

Thomisidae (Crab Spiders) has been sighted in the following countries: Canada, United States.

Thomisidae has also been sighted in the following states: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming.

Seasonality

Thomisidae has been primarily sighted during the month of May.

• January: 5
• February: 12
• March: 32
• April: 47
• May: 81
• June: 28
• July: 13
• August: 12
• September: 11
• October: 14
• November: 5
• December: 10

Additional Remarks

• Also see the family Philodromidae for more kinds of “crab spider.”