An online resource based on the award-winning nature guide

Black-and-Yellow Argiope

Wolf Spiders Active

3-24-16 wolf spider in grass 168

Wolf spiders can already be seen scurrying around fields, active after a long winter’s nap deep inside tussocks of grass where they stay until the temperature begins to rise.  Some are tiny and black, while others, such as the pictured wolf spider, are larger (1 ½”) and a shade of brown. These spiders hibernate in the winter, but other species have different survival strategies.  Some, like the black-and-yellow argiope, or garden spider, only live one season and die during late fall or winter, leaving behind their egg sac for next season. Many of the more active species that hunt prey rather than trap it in a web, spend the winter as nymphs, or juveniles, becoming full grown in the spring or early summer. In several species of spiders, young spiderlings hatch out in the fall and then remain in a communal egg sac through the winter.

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Jumping Spider Guards Egg Sac

6-5-14 jumping spider2  077Spiders protect their eggs by wrapping them up in a sac they make out of silk. Some species (such as garden, or black-and-yellow argiope, spiders) then die, leaving their egg sac to withstand the elements, as well as potential parasites and predators, on their own. As you would guess, these sacs are usually fairly impenetrable. In other species, female spiders survive long enough to guard their eggs until they hatch, or even until the young spiderlings disperse, and these sacs are usually far less tough. In the species where the female protects her eggs, some females carry their egg sacs with them at all times (wolf spiders, nursery web spiders) while others (jumping spiders) simply remain with the sac. Their excellent eyesight and impressive ability to leap many times their body length gives jumping spiders an advantage over any potential predators. (Photo – jumping spider with egg sac)

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