The goldenrod crab spider is the most abundant of all the flower spiders. This is in part due to abilities it has acquired through adaptation.
One of these adaptations is the two sets of enlarged front legs. This allows the spider to walk sideways and backward as well as forward. It does not need to turn its back from a predator to escape. The crab spider can also use these legs to grasp its prey, paralyze it by an injection of venom and liquify and consume its meal without the bother of spinning a web to catch it.
In order to actually ensnare its prey, the spider must rely on another specialization. It has the ability to change colors and blend in with the flower it is hunting from. The spider remains still and unseen, waiting to ambush an unlucky insect that choses the wrong flower to pollenate.
This color change may require several days before taking effect once the spider moves to another variety, so it prefers to hunt from a particular type of flower.
The spider’s color-changing talent is not only beneficial as a means of catching prey, it is also helpful to avoid becoming prey to predators such as birds.
The golden crab spider is just one example of the many creatures which have adapted to flourish on this earth.