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File: Argiope spider female adult on her web ventral view black background Don Det Laos.jpg
English: A female Argiope keyserlingi, St Andrew's Cross spider, taken in the Royal Botanic Gardens, Sydney, New South Wales, Australia Date 6 April 2013, 12:26:13
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Male is smaller than female. Male spins a web around the female's web, which is known as a companion web. After the mating, as in other common spiders, female kill the male. Female lay eggs on the companion web and wrap them up into a sac. Spiderlings eat each other in the sac until the strongest spiderling break the sac wall. [3]
Medium spiders are at most risk for predation. In an experiment with mud dauber wasps, the predator of Argiope aemula, they chose only a specific range of female spiders, 24–27 mm, to eat. In an experiment that measured predator attacks, almost all of the attacks were on medium-sized spiders whilst only one out of 18 was on a large spider.
Argiope bruennichi is commonly known as the wasp spider. In Australia, Argiope keyserlingi and Argiope aetherea are known as St Andrew's cross spiders, for their habit of resting in the web with paired legs outstretched in the shape of an X and mirroring the large white web decoration (the cross of St. Andrew [2] having the same form
Argiope trifasciata (the banded garden spider or banded orb weaving spider) [2] is a species of spider native to North and South America, but now found around the world. [3] It can be found in certain areas of Europe, namely the Iberian Peninsula , the Canary Islands , and Madeira .
Argiope novae-pommeraniae Strand, 1915 Argiope aetherea is a common, large orb-web spider (family Araneidae). Like other species of Argiope , it is commonly known as the St Andrew's Cross spider, due to the characteristic cross-shaped web decorations female spiders often include in their webs.