Fauna
Arachnid

American Green Crab Spider

Misumessus oblongus

Also known as Green Crab Spider

American green crab spiders are stealthy ambush hunters that blend seamlessly into bright green foliage, flower heads, and grass blades across North American meadows and gardens. Rather than spinning webs to ensnare prey, they perch motionless with their long front legs extended sideways, ready to seize visiting bees, flies, and butterflies with astonishing speed. Females guard their flattened silken egg sacs tucked inside folded leaves until the spiderlings emerge.

CamouflageAmbush PredatorArachnid
American Green Crab Spider reference1 / 7
(c) Judy Gallagher, some rights reserved (CC BY-SA), uploaded by Judy Gallagher · cc-by-sa
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyHoverflies, Small bees, Caterpillars
Predators
  • Spider wasps
  • Songbirds
  • Praying mantises
ThreatsWidespread pesticide use and heavy vegetation clearing or lawn mowing
HabitatsMeadows, old fields, gardens, forest edges, and shrubby roadsides
Life spanAbout 1 year
Classification
  1. OrderAraneae
  2. FamilyThomisidae
  3. GenusMisumessus
  4. SpeciesMisumessus oblongus
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.
Responsible observation
  • Spotting Technique: Scan the undersides of broad green leaves and flower sepals where their smooth, pale-green bodies blend into the plant tissue.
  • Gentle Observation: Approach slowly without casting a shadow, as sudden movement causes them to scuttle beneath the leaf or drop on a silk dragline.
Related species
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