Trichonephila clavata —also known as the Jorō spider (ジョロウグモ)— is a member of the Trichonephila genus. The spider can be found throughout Japan (except Hokkaidō), Korea, Taiwan, and China. The spider is also an introduced species in North America —first spotted, in 2013, in northeast Georgia and northwest / upstate South Carolina. It is believed that the species will become naturalized over much of the eastern seaboard of the United States due to its relative imperviousness to the cold.— Wikipedia.
The adult female's body size is 2/3 to 1 inch (17–25 mm), while the male's is 1/4 to 2/5 inches (7–10 mm). The adult female individual has stripes of yellow and dark blue, with red toward the rear of the abdomen. The web of females may reach several meters in length. In sunlight, the yellow threads appear to be a rich gold color. In autumn, the smaller males may be seen in the webs for copulating. After mating, the female spins an egg sack on a tree, laying 400 to 1,500 eggs in one sack. Her lifecycle ends by late autumn or early winter with the death of the spider. The next generation emerges in spring.
Although the spider is not aggressive, it will bite to protect itself. The bite is considered painful, but not life-threatening.
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