Misumena vatia female
A distinctive crab spider.ature females of this species can change their colour to more closely match the flower(s) it is sitting on for ambushing prey. Colours include whitish, yellow, greenish and pink. This is achieved by secreting pigments and it is based on visual feedback - apparently spiders with their eyes painted over can't adjust their colour. The colour change can take from 6-25 days, depending on what the change is to and from.
The males and females look very different, with males being smaller and having a more angles abdomen than the females. Both sexes are found at highest number in May and June, with females sometimes persisting autumn. Widespread and fairly common in the south of England and parts of Wales.