Silver Argiopes (Argiope argentata). This spider is one of nature's many pest control agents. Its appetite for insects results in its keeping many burgeoning insect populations in check. As a group, orb-weaving spiders consume many tonnes of insects every year. You can find silver argiopes among shrubbery, tall plants and flowers in meadows and gardens. They weave a distinctive zigzag pattern within their web - an easy way to identify the presence of this particular species. They are not considered dangerous to humans although like all spiders can bite.