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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.
Like other Maratus spiders, the males of the species engage in a courtship display, during which they extend their median and posterior fringed spinnerets. A male presents both the extended spinnerets and his expanded and inflated opisthoma as he faces the female that he courts. [4] Females will usually mate only once.
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.
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.
The two spiders mate and cohabit until the male dies, when the female eats him. The female makes an egg sac and hangs it in her burrow. The next summer, the eggs hatch, and the spring after that, the spiderlings leave their mother's burrow and wander off to find a suitable place to build a lair of their own.
Wolf spider. What they look like: With over 200 species of wolf spiders crawling around, it’s no wonder that they range in size and appearance.“The largest species can be up to an inch and a ...
This spider is a common but often uncomfortable sight and has been dominating populations around the Palmetto State.
Nursery web spiders are known to be univoltine, [7] which means it only has one brood of offspring per year. The care of the offspring is typically solely the female's responsibility; from carrying eggs to maintaining the sac until hatching, the female does most of the work, and the male's role is very limited.