Huntsman Spider, Giant Crab Spider
Eusparassus dufouri or similar Sparassidae species (Huntsman Spider)
Sparassidae (Huntsman Spiders), Order Araneae. Key family characteristics include lateral-facing eyes, sprawling legs adapted for sideways movement, and a flat body profile.
Physical Description
The spider has a characteristically flattened body profile with long, robust legs that extend outward to the sides in a crab-like posture. The cephalothorax is broad and rounded, while the abdomen is slightly elongate and oval. It has a fine coating of setae giving it a velvety appearance.
Size Estimate
Body length is approximately 15 to 20 mm, with an expansive leg span reaching 60 to 80 mm. This appears to be an adult or sub-adult specimen.
Coloration & Markings
Muted earth tones of light brown, tan, and yellowish-grey. The cephalothorax features faint darker markings, and the legs may show subtle banding towards the joints.
Web Type
Huntsman spiders do not build webs to capture prey. Instead, they are active nocturnal hunters that rely on speed and stealth, occasionally constructing temporary silken retreats under loose bark or in crevices.
Eye Arrangement
Eight eyes arranged in two distinct, relatively uniform rows of four across the front of the carapace, characteristic of the huntsman family Sparassidae.
Leg Characteristics
Long, strong legs positioned laterally (laterigrade), allowing the spider to move sideways rapidly with great agility. The tarsi possess heavy scopulae (dense hair tufts) enabling them to climb smooth vertical surfaces like walls and glass.
Venom & Safety Information
Venom Information
Contains neurotoxic components designed to immobilize small invertebrate prey. The venom is generally weak and non-lethal to humans.
Medical Significance
Not medically significant. A bite may cause localized pain, mild swelling, and redness similar to a bee sting, but systemic effects are extremely rare.
Safety Recommendations
Keep calm if one is spotted indoors. To relocate, gently place a transparent container over the spider, slide a stiff piece of paper underneath, and release it safely outdoors.
Habitat & Behavior
Habitat & Range
Found across various warm temperate and tropical regions globally. Indoors, they frequently wander into human dwellings, seeking shelter in dark corners, behind furniture, or near baseboards.
Behavior & Temperament
Fast-moving, agile, and generally non-aggressive. When confronted, their primary defense is rapid flight to the nearest dark crevice rather than biting.
Diet & Prey
Carnivorous generalist predator. Feeds primarily on insects, including cockroaches, crickets, beetles, and other household pests, capturing them through active stalking and pouncing.
Seasonal Activity
Most active during the warmer spring and summer months, though indoor specimens may remain active year-round in climate-controlled buildings.
Description
A striking and beneficial household visitor, the huntsman spider is easily recognized by its sprawling, crab-like stance and impressive speed. Though its large size and sudden movements can startle homeowners, it serves as an exceptional natural pest controller.
Key Features
Laterigrade legs that extend sideways, flattened body profile, absence of an orb web, and rapid burst movement.
Similar Species
Wolf Spiders (Lycosidae), which have a more upright posture and different eye arrangements, and Recluse Spiders (Loxosceles), which lack the distinctive lateral leg stance.
Life Cycle
Females produce a flat, paper-like silk egg sac, often guarding it fiercely. Spiderlings go through multiple molts before reaching maturity, with a typical lifespan ranging from 1 to 2 years.
Ecological Importance
Acts as an effective apex predator of household and garden insect populations, helping naturally regulate pest species without chemical intervention.
Conservation Status
Not evaluated by the IUCN, but populations are generally stable and widespread.
Interesting Facts
Huntsman spiders are among the fastest terrestrial invertebrates, capable of covering vast distances in seconds. Despite their intimidating appearance, mothers exhibit strong maternal care by guarding their egg sacs.
Photography Tips
Use a macro lens with natural lighting or an off-camera diffuser. Maintain a respectful distance to avoid startling the spider into rapid flight, and photograph from a top-down or profile angle.
Identified: 2026-09-05T23:34:15.750116