大卫花蟹蛛，动物界-节肢动物门-蛛形纲-蜘蛛目-蟹蛛科-花蟹蛛属。维基百科Xysticus is a genus of ground crab spiders described by C. L. Koch in 1835, belonging to the order Araneae, family Thomisidae. The genus name is derived from the Ancient Greek root xyst, meaning "scraped, scraper".Distribution[edit]The genus Xysticus is distributed almost worldwide, but has not been recorded from South America. Of the about 360 species of the genus currently described, about 71 are present in Europe. Thomisidae