Fauna
Arachnid

Stone Spider

Pardosa lapidicina

Also known as Stone Wolf Spider

Stone spiders excel at blending into gravel bars, stony shores, and quarry rubble across central and eastern North America. Unlike web-building arachnids, these agile diurnal hunters sprint across sun-warmed rocks to track down small insects with keen visual acuity. Females construct spherical egg sacs carried securely behind them on their spinnerets, later ferrying dense clusters of hatched spiderlings on their backs.

DiurnalCamouflageAgile
Stone Spider reference
(c) Dan MacNeal, some rights reserved (CC BY), uploaded by Dan MacNeal · cc-by
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyMidges, Springtails, Shore Flies
Predators
  • Spotted Sandpipers
  • American Bullfrogs
  • Spider Wasps
ThreatsRiparian habitat alteration, shoreline channelization, and water pollution
HabitatsRocky riverbanks, gravel bars, talus slopes, lake shores, and stone quarries
Life span1–2 years
Classification
  1. OrderAraneae
  2. FamilyLycosidae
  3. GenusPardosa
  4. SpeciesPardosa lapidicina
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance; completely harmless to humans and pets.
Responsible observation
  • Spotting: Search flat, sunlit cobble and gravel bars along clean waterways during warm afternoons.
  • Approach: Step lightly and avoid casting a shadow overhead, which triggers an immediate sprint into hiding.
Related species
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