The Mimetidae are specialists in eating web-building spiders. Ero does not build a proper hunting web, it is a nomadic species which wanders in search of webs. Once found, she may invade the web, and then pluck it with her front legs. The owner might come to investigate, as it would do if an insect had fallen in, but then Ero will quickly grab and bite one of the spiders legs. The venom is quickly acting and then Ero will feed on the spider. In occasions the web owner might be able to escape minus a leg
Stalked egg sacs
Female pirate spiders produce characteristic egg sacs, which are more noticeable than the spiders themselves. They have a long stalk and are covered on coarse, brown wavy silk, presumable for protection, as the female takes no care of the egg sac or the spiderlings themselves.
These two photos are the only ones I have possibly portraying a Ero cambridgei/furcaca female sitting on a flower in a bush, legs withdrawn.