Arachnid · GBIF taxon 7908320
Wetland Giant Wolf Spider
Tigrosa helluoAlso known as Wetland Wolf Spider
Wetland Giant Wolf Spiders prowl damp forest floors and marshy edges, relying on keen eyesight and remarkable speed rather than webs to capture prey. Females frequently carry their globular silk egg sacs attached to their spinnerets, later lugging hundreds of newly hatched spiderlings on their abdomens. Active primarily at night, these robust arachnids shelter under damp logs, rocks, or deep leaf litter during the heat of the day.
NocturnalPredatorySolitary
1 / 7—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
- Crickets
- Beetles
- Other spiders
Predators
- Birds
- Small mammals
- Spider wasps
ThreatsHabitat destruction, wetland drainage, and chemical pesticides
HabitatsMarshes, damp woodlands, fields, and riparian shorelines
Life span1 to 2 years
Size / weightNot available
Classification
- OrderAraneae
- FamilyLycosidae
- GenusTigrosa
- SpeciesTigrosa helluo
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Delivers a painful defensive bite if pressed or handled; observe without touching.
- Why it is dangerous
- Possesses venom that causes mild localized pain and swelling, though bites are rare and not medically dangerous.
- How to recognize a risky encounter
- Look for a large dark brown spider with a faint yellow median stripe along its carapace and thick legs.
- What to do
- Avoid picking up barehanded; use a cup and card if relocation out of a structure is necessary.
Responsible observation
- Nighttime Spotting: Shine a flashlight near ground level to spot their bright green eyeshine in damp areas.
- Safe Observation: Maintain a respectful distance to watch their active hunting behavior without disturbing them.
- Pest Control: Allow these beneficial predators to remain undisturbed when found outdoors near moist soil.
Predator (c) stephen, some rights reserved (CC BY) · cc-by
Close Relative no rights reserved, uploaded by Mirko Schoenitz · cc0
Close Relative (c) M. Whitson, some rights reserved (CC BY) · cc-by
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