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A male Eresus sandaliatus. Sexual selection in spiders shows how sexual selection explains the evolution of phenotypic traits in spiders.Male spiders have many complex courtship rituals and have to avoid being eaten by the females, with the males of most species surviving only a few matings and consequently having short life-spans.
Double-tailed web spiders mate during summer. After mating, the female will lay her eggs in an egg sac (an ovoid ball of spider silk) in her sanctuary. She then stretches her body over the surface of the egg sac and guards it. This behavior is distinctive and makes the species easy to recognise. [9]
This seasonality of reproduction is largely due to the male spiders, who spend the winter months molting to adulthood, while female spiders are present year-round. This is evidenced by the reduction in eggs found during winter months. Egg clutches are enclosed in a 5 mm thick cocoon, hidden about 12 cm deep in the burrow.
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.
A spider could do this only a few ways, like using its silk to float and land in a sleeping person's mouth. But Maggie Hardy, biochemist at the University of Queensland, said, "You'd have to be ...
Spiders do not travel far to mate and will typically mate in the natal colony, leading to high levels of inbreeding. [3] Males will begin to fight over female territory in the breeding season and will compete for females. They will normally mate within the parent colony. If males do emigrate, they join the nests of solitary females. [8]
This spider is a common but often uncomfortable sight and has been dominating populations around the Palmetto State.
“In general, spiders will bite only if they can’t get away from you, or are protecting their babies and don’t want to leave the babies behind, and/or they are being crushed or otherwise hurt ...