Golden Silk Orb-Weaver, Banana Spider, Writing Spider
Trichonephila clavipes
Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include building vertical, wheel-like orb webs and having eight similar-sized eyes arranged in two rows.
Physical Description
Elongated body with a distinctive long abdomen, small cephalothorax, and very long legs with characteristic tufts of hairs (brushes) on the tibiae. Marked sexual dimorphism is present, with females being significantly larger than males.
Size Estimate
Female body length around 24 to 40 mm with a leg span up to 10 to 12 cm. This specimen appears to be an adult female based on proportions.
Coloration & Markings
Dark brown to reddish-brown base coloration with yellowish spots or stripes along the elongated abdomen and yellowish-banded legs featuring dark hair tufts.
Web Type
Large, permanent vertical orb web constructed with strong golden-hued silk, often built between trees, shrubs, or structural overhangs.
Eye Arrangement
Eight small eyes arranged in two slightly curved rows, typical of the orb-weaver family.
Leg Characteristics
Exceptionally long and slender legs with prominent dark hair tufts on the lower segments, often held in pairs extending outward.
Venom & Safety Information
Venom Information
Neurotoxic venom primarily targeted at invertebrate prey. It is mild and generally harmless to healthy adult humans.
Medical Significance
Not medically significant. A bite may cause minor local pain, redness, or swelling that resolves quickly without medical intervention.
Safety Recommendations
Simply leave the spider alone if it is outdoors. If found near a doorway, it can be gently relocated using a stick or broom to guide it into a wooded area.
Habitat & Behavior
Habitat & Range
Found throughout the southeastern United States, Central America, the Caribbean, and South America. Prefers forested areas, woodland edges, gardens, and human structures where stable anchor points exist for large webs.
Behavior & Temperament
Docile and non-aggressive. Hangs head-down in the center of its large orb web day and night, waiting for flying prey. Rarely bites unless trapped or directly handled.
Diet & Prey
Mainly flying insects such as mosquitoes, flies, beetles, moths, and occasionally small butterflies or dragonflies caught in the sturdy orb web.
Seasonal Activity
Most active and visible during the late summer and autumn months when females reach their maximum size and construct prominent webs.
Description
The Golden Silk Orb-Weaver is one of the most magnificent and easily recognizable spiders in North America. Known for weaving massive, shimmering golden webs, this gentle giant spends its days suspended in the center of its geometric trap. While its striking appearance and large size can initially startle homeowners, it is entirely harmless to humans and serves as a natural pest control agent.
Key Features
Elongated golden-spotted abdomen, long banded legs with prominent tibial hair tufts, and a massive golden-silk orb web.
Similar Species
Argiope aurantia (Black and Yellow Garden Spider), which has a wider, oval-shaped abdomen and zig-zag stabilimenta in the web.
Life Cycle
Females produce a silken egg sac containing hundreds of eggs attached to nearby bark or protected spots in autumn. Spiderlings emerge in spring, go through multiple molts, and reach maturity by late summer.
Ecological Importance
Acts as an effective natural predator of flying insect populations, helping regulate pest species while serving as a food source for birds and larger arboreal predators.
Conservation Status
Not evaluated by the IUCN, but populations are generally stable and widespread throughout its native geographic range.
Interesting Facts
The silk produced by this species has a distinct golden sheen due to pigments in the silk proteins, and scientists are studying its remarkable tensile strength and elasticity for potential medical and industrial applications.
Photography Tips
Use a macro lens or optical zoom from a safe distance of a few feet. Backlighting through the web can highlight the signature golden sheen of the silk.
Identified: 2026-09-05T20:08:09.262226