- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Arachnida
- Order: Araneae
- Suborder: Araneomorphae
- Family: Dysderidae
- Genus: Dysdera
- Species: Dysdera crocata
Other Common Names
Dysderid Spider, Woodlouse Hunter, Woodlouse Spider, Sowbug Killer, Slater Spider, Pillbug Hunter, Orange Spider, Cell Spider, Long-fanged Ground Spider
Carl Ludwig Koch, 1838
There have been 31 confirmed sightings of Dysdera crocata (Woodlouse Hunter), with the most recent sighting submitted on February 17, 2018 by Spider ID member brian_r. The detailed statistics below may not utilize the complete dataset of 31 sightings because of certain Dysdera crocata sightings reporting incomplete data.
- Web: 0% of the time, Dysdera crocata spiders are sighted in a spider web (Sample size: 13)
- Sex: 11 female and 7 male.
- Environment: Dysdera crocata has been sighted 3 times outdoors, and 10 times indoors.
- Outdoors: Man-made structure (2). Ground layer (1).
Location and Range
Dysdera crocata (Woodlouse Hunter) has been sighted in the following countries: Netherlands, United States.
Dysdera crocata has also been sighted in the following states: California, Colorado, Illinois, Iowa, Massachusetts, Minnesota, Missouri, Nevada, Ohio, Oregon, Pennsylvania, Texas, Washington.
Dysdera crocata has been primarily sighted during the month of February.
- January: 6
- February: 7
- April: 1
- May: 6
- July: 1
- Because of similar coloration, this spider can be mistaken for the “Broad-faced Sac Spider” (Trachelas tranquillus) and related species in that genus. Dysdera have 6 eyes while Trachelas have 8; the large fangs of Dysdera also help distinguish it.
- Egg sac may contain around 70 eggs, and is guarded by the female inside her silken retreat.
- Individuals make take about 18 months to mature, then survive an additional year or two on average.
- Prey seems to be preferentially terrestrial isopod crustaceans known as woodlice (aka “sowbugs” and “pillbugs”), but any other arthropods it can catch are fair game. The long fangs help the spider to maintain a scissor-like grip on woodlice, while typically using only one fang to pierce the prey’s softer underbelly.