|Yellow crab spider|
The yellow crab spider,(Thomisus callidus), is a species of spider of the genus Thomisus . It is found in Sri Lanka, Singapore, Sumatra, Nias Island, and Java. They often hide in flowers and are able to change colors just to blend in to capture preys.
Spiders are air-breathing arthropods that have eight legs and chelicerae with fangs able to inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. As of November 2015, at least 45,700 spider species, and 113 families have been recorded by taxonomists. However, there has been dissension within the scientific community as to how all these families should be classified, as evidenced by the over 20 different classifications that have been proposed since 1900.
Thomisus is a genus of crab spiders with almost 150 species described. The genus includes species that vary widely in their ecology, but the best known crab spiders are those species that people call the flower crab spiders, because they are ambush predators that feed on insects visiting flowers. The flower crab spiders are the species for which the popular name was coined, because of their crab-like motion and their way of holding their front legs in an attitude reminiscent of a crab spreading its claws as a threat.
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, is an island country in South Asia, located in the Indian Ocean to the southwest of the Bay of Bengal and to the southeast of the Arabian Sea. The island is historically and culturally intertwined with the Indian subcontinent, but is geographically separated from the Indian subcontinent by the Gulf of Mannar and the Palk Strait. The legislative capital, Sri Jayawardenepura Kotte, is a suburb of the commercial capital and largest city, Colombo.
The Thomisidae are a family of spiders, including about 175 genera and over 2,100 species. The common name crab spider is often linked to species in this family, but is also applied loosely to many other species of spiders. Among the Thomisidae, "crab spider" refers most often to the familiar species of "flower crab spiders", though not all members of the family are limited to ambush hunting in flowers.
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".
Misumena vatia is a species of crab spider with holarctic distribution. In North America, where it is the largest and best-known flower spider, it is called the goldenrod crab spider or flower (crab) spider, because it is commonly found hunting in goldenrod sprays in the autumn. Young males in the early summer may be quite small and easily overlooked, but females can grow up to 10 mm (0.39 in) ; males reach 5 mm (0.20 in) at most.
Platythomisus is a genus of flattened crab spiders from Africa and Southern Asia.
Misumena nigromaculata is a species of flower crab spiders endemic to Madeira. It is typical to find them on top of yellow flowers such as Sonchus or Tolpis.
Thomisus onustus is a crab spider species in the genus Thomisus belonging to the family Thomisidae.
Misumenoides formosipes is a species of crab spiders found in the US and Canada. The species' unofficial common name is white banded crab spider, which refers to a white line that runs through the plane of their eyes.
Synema globosum is a species of spiders belonging to the family Thomisidae. It is sometimes called the Napoleon spider, because of a supposed resemblance of the markings on the abdomen to a silhouette of Napoleon.
Ozyptila trux, the yellow leaflitter crab spider, is a crab spider species with Palearctic distribution.
The genus Oxytate, commonly known as grass crab spiders, comprises a homogenous group of nocturnal crab spiders. The complete mitochondrial genome of the type species O. striatipes was determined in 2014.
Boliscus is a genus of crab spiders in the family Thomisidae, containing only three species.
Cymbacha is a genus of crab spiders in the family Thomisidae, containing eight species.
Holopelus is a genus of crab spiders in the family Thomisidae, containing seven species.
Tagulis is a genus of crab spiders in the family Thomisidae, containing only two species.
Tarrocanus is a genus of crab spiders in the family Thomisidae, containing only two species.
Thomisus granulifrons is a species of spiders of the genus Thomisus. It is native to India and Sri Lanka.
Pagida is a genus of crab spiders in the family Thomisidae, containing only two species.
Mecaphesa asperata, the northern crab spider, is a species of crab spider in the family Thomisidae, found in North and Central America, and the Caribbean. It is a species of the 'flower spiders', so-called because they generally hunt in similarly coloured flowers for visitors such as bees and flies, and is a much smaller nearctic relative of the better-known Goldenrod Spider.
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