Flower Crab Spider

Scientific Name: Misumena vatia

Order & Family: Araneae, Thomisidae

Size: Females typically 7-10 mm; males 3-5 mm.

Flower Crab Spider

Natural Habitat

Found on flowers, shrubs, and other plants in gardens, meadows, and woodlands, often camouflaged amongst the petals.

Diet & Feeding

Predatory, ambushing various insects that visit flowers, such as bees, flies, butterflies, and other smaller insects. They use their strong front legs to quickly grasp prey.

Behavior Patterns

These spiders are ambush predators that rely on camouflage to catch their prey. They can change color (from white to yellow) over several days to match the flower they are currently inhabiting. They often hold their two front pairs of legs outward, hence the 'crab' in their common name. They do not build webs for catching prey but may use silk for draglines or egg sacs.

Risks & Benefits

Generally harmless to humans; their venom is not considered medically significant. They are beneficial as natural pest control, helping to regulate populations of various insects that may be considered pests in gardens, while also preying on pollinators.

Identified on: 10/11/2025