Woodlouse Hunter (or generic ground spider)
Uncertain (potentially Dysdera crocata or a similar wandering/ground spider)
Dysderidae (Woodlouse Spider Family), Order Araneae. Key family characteristics include six eyes arranged in a compact group and remarkably large, forward-pointing chelicerae adapted for piercing crustacean exoskeletons.
Physical Description
Elongated body with a distinct reddish-brown cephalothorax and a pale beige to yellowish-gray abdomen. The overall form suggests an active hunter or wandering ground-dwelling species rather than an orb-weaver.
Size Estimate
Estimated body length around 10 to 15 millimeters with a moderate leg span, typical of a medium-sized wandering spider or adult woodlouse hunter.
Coloration & Markings
Features a striking contrast between a glossy reddish-brown head/thorax and a dull, pale greyish-yellow or beige abdomen without prominent complex dorsal patterns.
Web Type
Does not build a traditional web for prey capture; instead, constructs a silken retreat or daytime shelter under rocks, logs, or indoors under carpets and baseboards.
Eye Arrangement
Six eyes clustered closely together in a compact oval or semicircle on the anterior portion of the cephalothorax, typical of haplogyne spiders.
Leg Characteristics
Moderate length, relatively robust, colored similarly to the cephalothorax, lacking extreme spination but built for fast crawling across rough terrain.
Venom & Safety Information
Venom Information
Venom is relatively mild and not considered medically significant to humans, acting primarily to immobilize small invertebrate prey.
Medical Significance
Low medical significance. A bite can be painful due to the mechanical piercing of the large fangs, but envenomation typically causes only localized, temporary irritation.
Safety Recommendations
If found indoors, gently capture the spider using a container and a piece of paper, then release it outdoors. Avoid handling with bare hands to prevent defensive bites.
Habitat & Behavior
Habitat & Range
Cosmopolitan distribution often found in temperate regions worldwide, frequently inhabiting gardens, under stones, leaf litter, and occasionally wandering indoors into homes.
Behavior & Temperament
Nocturnal hunter that actively forages for prey. Generally docile unless cornered or handled directly, when it may use its large fangs defensively.
Diet & Prey
Specializes primarily on isopods (woodlice/pillbugs), using its oversized chelicerae to pierce their tough outer shells, though it will take other small arthropods.
Seasonal Activity
Most active during spring and autumn evenings when humidity is higher and wandering spiders actively search for mates or prey.
Description
This blurry image shows a small, elongated brownish spider often encountered wandering across indoor flooring or near baseboards. Though details are obscured by motion blur and low resolution, its general posture and coloration resemble ground-dwelling hunters that seek out damp environments or prey.
Key Features
Elongated reddish-brown cephalothorax, pale abdomen, lack of an orb web, and ground-dwelling habits.
Similar Species
Other wandering spiders such as ground spiders (Gnaphosidae) or tube-web spiders (Segestriidae), distinguished primarily by eye arrangements and fang structure.
Life Cycle
Females construct silken egg sacs in secluded retreats, laying dozens of eggs. Spiderlings stay near the mother briefly before dispersing. Lifespan typically spans 1.5 to 2 years.
Ecological Importance
Acts as a natural controller of garden pests and detritivores, helping regulate populations of woodlice and small insects around homes and yards.
Conservation Status
Not evaluated by the IUCN; widespread, common, and highly adaptable to human-altered environments.
Interesting Facts
Woodlouse spiders possess exceptionally large fangs capable of piercing the hard calcium carbonate shells of pillbugs, a food source avoided by most other arachnids.
Photography Tips
Use a macro lens with adequate lighting, a fast shutter speed to prevent motion blur, and a tripod if possible to capture clear details of the eyes and chelicerae.
Identified: 2026-08-21T05:38:28.522313