“Banana spider” is a common name often used to describe large, distinct spiders, particularly the Golden Silk Orb-Weaver, Trichonephila clavipes (formerly Nephila clavipes). These spiders are recognized for their impressive size and the striking golden hue of their extensive webs. Their noticeable appearance and significant dimensions frequently draw attention.
Identifying the Banana Spider
The term “banana spider” primarily refers to the Golden Silk Orb-Weaver, Trichonephila clavipes. This spider features an elongated body with vibrant yellow, black, and sometimes reddish coloration. Its legs often display banding. The most characteristic feature of Trichonephila clavipes is the golden silk of its large, intricate webs.
Unpacking Their Impressive Size
Female Golden Silk Orb-Weavers are notably larger than males. Adult females typically have a body length ranging from 1 to 3 inches (25 to 75 mm). Their long legs contribute greatly to their perceived size, giving them a leg span that can exceed 4 to 6 inches. This makes them one of the largest non-tarantula spiders in North America.
In contrast, male Golden Silk Orb-Weavers are considerably smaller, often measuring less than half an inch (6-8 mm) in body length. Females can be five to six times larger than males. A female Trichonephila clavipes can be as large as a small hand or a small banana. Their long, slender legs, often with hairy patches, enhance their overall appearance.
Where You Might Encounter These Large Spiders
Golden Silk Orb-Weavers are prevalent in warmer, humid regions. In the Americas, Trichonephila clavipes is found throughout the southeastern United States, extending south through Central America and into parts of South America. These spiders prefer environments with high humidity and open spaces, such as forests, garden areas, and along forest edges or clearings. They frequently build their large, strong webs between trees, shrubs, or even near human structures like fences and building overhangs. Their webs, which can span several feet in diameter, are often constructed in open, high-traffic insect flight paths, particularly from late summer to early fall when mature females are most visible.
Are They Dangerous? Understanding Their Bite
Despite their imposing size, Golden Silk Orb-Weavers are not considered aggressive towards humans. Bites typically occur only if the spider feels threatened, such as when it is provoked or accidentally pressed against the skin. The effects of a bite from a Trichonephila clavipes are generally mild and are often compared to a bee sting.
Symptoms usually include localized pain, redness, and some swelling at the bite site. These reactions are not serious and resolve on their own for most people. The venom of the Golden Silk Orb-Weaver is considered harmless to humans and does not pose a significant health concern.