Fauna
Arachnid · GBIF taxon 5776654

European Harvestman

Phalangium opilio

Also known as Daddy Longlegs, European Daddy Longlegs

European harvestmen move across garden foliage and soil on eight delicate, thread-like legs, using their long second pair of legs as sensory antennae to probe their surroundings. Unlike true spiders, their fused body segments lack a narrow waist, and males feature prominent horn-like projections on their jaws used during courtship combat. They act as beneficial generalist predators in farmland and backyards, consuming soft-bodied pests like aphids, mites, and small caterpillars.

ArachnidNocturnalBeneficial
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & prey
  • Aphids
  • Mites
  • Small caterpillars
Predators
  • Songbirds
  • Ground beetles
  • Toads
ThreatsBroad-spectrum pesticides and land clearing
HabitatsGardens, agricultural fields, grasslands, forest edges, and parks
Life span1 year
  1. OrderOpiliones
  2. FamilyPhalangiidae
  3. GenusPhalangium
  4. SpeciesPhalangium opilio
Range data is not available yet.
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Night Scouting: Look on garden foliage or exterior walls near lights after dusk when they actively hunt.
  • Gentle Handling: Allow them to walk onto an open palm without trapping or pulling their delicate legs.
  • Garden Safeguards: Reduce pesticide use to support these natural pest controllers in your yard.
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