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Humans' reaction and the degree of irritation to a defensive urticating hair barrage can vary tremendously, based on the species in question. Some, such as those of the Chilean rose tarantula ( Grammastola rosea ) and the pinktoe tarantula ( Avicularia avicularia ), are fairly mild and innocuous to humans.
Spiders that spin webs typically have three claws, the middle one being small; hunting spiders typically have only two claws. Since they do not have antennae, spiders use specialised and sensitive setae on their legs to pick up scent, sounds, vibrations and air currents. [6] Some spiders, such as the Australian crab spider, do not have claws.
Demodex folliculorum is a microscopic mite that can survive only on the skin of humans. [2] [3] Most people have D. folliculorum on their skin.Usually, the mites do not cause any harm, so are considered an example of commensalism rather than parasitism; [4] but they can cause disease, known as demodicosis.
Spiders will only bite humans in self-defense, and few produce worse effects than a mosquito bite or bee sting. [120] Most of those with medically serious bites, such as recluse spiders (genus Loxosceles) and widow spiders (genus Latrodectus), would rather flee and bite only when trapped, although this can easily arise by accident.
Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of araneomorph spiders first described by Carl Jakob Sundevall in 1833. [1] This diverse, globally distributed family includes over 3,000 species in 124 genera , [ 2 ] and is the most common arthropod found in human dwellings throughout ...
Phryganoporus candidus is a small spider, with both males and females typically measuring 6–10 mm long. [1] [2] Their main body colouration is brown, but they have patterning across their bodies in lighter shades of brown. [3] Additionally, P. candidus are covered in a fine silvery grey hair and the density of the hair varies from spider to ...
Araneus mitificus are small spiders and exhibit sexual dimorphism. The females grow up to 6 to 9 mm (0.24 to 0.35 in). Males are smaller, reaching only 3 to 5 mm (0.12 to 0.20 in), [4] [5] and are generally less colorful than the females. [2] Their abdomens are globular and covered with fine hair. They slope abruptly from the mid-region to the ...
They comprise over 110,000 named species, of which 51,000 are species of spiders. [3] [4] The term is derived from the Greek word ἀράχνη (aráchnē, 'spider'), from the myth of the hubristic human weaver Arachne, who was turned into a spider. [5]