Entoma
White-banded crab spider, Misumenoides formosipes, plate

Crab spiders

Misumenoides formosipes

White-banded crab spider

Female whitebanded crab spiders slowly shift color between white and yellow to match their flower, a change that can take up to three weeks to complete.

WhereFields and flowers across North America
SizeFemale 6 to 13 mm, male about 3 mm body length
WhenJune to October

The whitebanded crab spider gets its name from a pale ridge just above the mouth, visible on close inspection. Females have a body that is pale in the center and darker, often greenish, at the sides, typically white, yellow or pink with dark patterned marks on the abdomen, while the much smaller males have a green, brown, yellow or orange body with long, dark front legs.

This crab spider sits motionless on flowers such as black-eyed Susan or goldenrod, grabbing bees, flies and other visiting insects with its front legs rather than trapping them in a web. Found in fields and field edges across most of the United States and southern Canada, adults are active from summer into September, and females can slowly shift their color between white and yellow to better match the bloom they are hunting from.

Traits

Habitat

Grassland

Colour

Yellow, White, Green

Active

Day

To people

This crab spider is not known to bite people; if seen on flowers in the garden, it can simply be left in place to hunt pollinating insects.

Activity through the year

Often confused with

Goldenrod crab spiderOpen entry ›
Misumena vatia

Lacks the pale ridge below the eyes and the dark inverted V mark on the abdomen that identify the whitebanded crab spider, and tends to run somewhat larger overall.

Questions

Is the White-banded crab spider dangerous to people?

This crab spider is not known to bite people; if seen on flowers in the garden, it can simply be left in place to hunt pollinating insects.

When can you see the White-banded crab spider?

The White-banded crab spider can be seen from June to October, by day.

Plate retouched from a photo by Fidel, CC BY 4.0, iNaturalist Licence

Report a mistake in this entry

Spiders›Crab spiders›Misumenoides

Last updated 2026-09-27. Every entry is checked against published sources.