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Bolas: Bolas spiders are unusual orb-weaver spiders that do not spin the webs. Instead, they hunt by using a sticky 'capture blob' of silk on the end of a line, known as a ' bolas '. By swinging the bolas at flying male moths or moth flies nearby, the spider may snag its prey rather like a fisherman snagging a fish on a hook.
The spiders are most often observed in railway tunnels and mines since these are more likely to be visited by humans. The young spiders are, after several instars (and in contrast to the adults), strongly attracted to light [ 2 ] —probably an evolutionary adaptation which ensures the spread of the species to new areas (see Life cycle for ...
These spiders use tens to hundreds of silk strands, which form a triangular sheet with a length and width of about 1 meter (39 in). [8] Pardosa spp. attempting to balloon. In Australia, in 2012 and in May 2015, millions of spiders were reported to have ballooned into the air, making the ground where they landed seem snow-covered with their silk ...
Mastophora hutchinsoni, also known as the American bolas spider, is a species of orb weaver in the genus Mastophora.The genus is distributed extensively throughout various subtropical geographical areas including Australia, South Africa, Oriental Asia, and the Americas and is not found in Europe.
Flashing a beam of light over the spider produces eyeshine; this eyeshine can be seen when the lighting source is roughly coaxial with the viewer or sensor. [4] The light from the light source (e.g., a flashlight or sunlight) has been reflected from the spider's eyes directly back toward its source, producing a "glow" that is easily noticed.
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These are formed in the same way as spanning-thread webs, but with only three radii, so that they appear triangular. Bolas spiders do not spin webs at all, adult females catching their prey on single sticky threads. Finally, some species capture their prey without a web, using their outstretched legs, as do juvenile and male bolas spiders. [8]
Spiders are relatively easy pests to get rid of, says Emma Grace Crumbley, entomologist for Mosquito Squad. “They do not have wings and cannot fly away, and while some spiders are speedy and can ...