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Thomisus Iswadus
''Thomisus'' is a genus of crab spiders (family Thomisidae) with around 142 species described. The genus includes species that vary widely in their ecology, with some that are ambush predators that feed on insects visiting flowers. Like several other genera in the family Thomisidae, they are sometimes referred to as flower crab spiders, from their crab-like motion and their way of holding their front legs, reminiscent of a crab spreading its claws as a threat. Description and behavior As with most ''Thomisidae'' species, ''Thomisus'' exhibit sexual size dimorphism: females are in length, whereas males are only . Many species are brightly colored, usually matching the color of the flower in which they are waiting in ambush. Not all species are flower-dwelling, but among those that are, at least some species can change their colour over a period of some days to match the flower colour. Studies suggest that bees are inclined to avoid a flower that contains a spider-sized object o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Athanase Walckenaer
Baron Charles Athanase Walckenaer (25 December 1771 – 28 April 1852) was a French civil servant, writer, man of letters, and scientist. He was a polymath and wrote extensively on geography, natural history, and literature. Major contributions included his multi-volume natural histories of arachnids and insects, some published in collaboration with others. He was made a baron in 1823. Biography Walckenaer was born in Paris and after losing his parents at an early age he was raised by his uncle Charles-Nicolas Duclos Dufresnoy, a notary in the court of Louis XVI. His uncle's elite and educated circle made an impression on the young boy and he was sent to study at the universities of Oxford and Glasgow. Dufresnoy was guillotined in 1794 following the French Revolution for being associated with the regime. In 1793, Walckenaer was appointed head of the military transports in the Pyrenees, after which he pursued technical studies at the École Nationale des Ponts et Chaussées an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomisus
''Thomisus'' is a genus of crab spiders (family Thomisidae) with around 142 species described. The genus includes species that vary widely in their ecology, with some that are ambush predators that feed on insects visiting flowers. Like several other genera in the family Thomisidae, they are sometimes referred to as flower crab spiders, from their crab-like motion and their way of holding their front legs, reminiscent of a crab spreading its claws as a threat. Description and behavior As with most ''Thomisidae'' species, ''Thomisus'' exhibit sexual size dimorphism: females are in length, whereas males are only . Many species are brightly colored, usually matching the color of the flower in which they are waiting in ambush. Not all species are flower-dwelling, but among those that are, at least some species can change their colour over a period of some days to match the flower colour. Studies suggest that bees are inclined to avoid a flower that contains a spider-sized object o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
