Spotted Orb-Weaver, Hentz Orb-Weaver, Barn Spider
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae
Physical Description
Robust body with a large, bulbous, hairy or spiny-looking abdomen that is oval to triangular. The cephalothorax is smaller and covered in fine setae. Females are significantly larger than males, displaying classic sexual dimorphism typical of orb-weavers.
Size Estimate
Body length ranges from 9 to 19 mm for females, while males are smaller, around 8 to 13 mm. Leg span can reach up to 35 to 50 mm.
Coloration & Markings
Variable coloration ranging from light brown, yellowish-orange to dark reddish-brown. The abdomen typically features a central leaf-like pattern or cross-like markings (folium) bordered by dark lines, often accompanied by distinct paired spots.
Web Type
Vertical orb web constructed with sticky spiral threads, typically ranging from 1 to 2 feet in diameter, built in late afternoon or evening in gardens, porches, and near outdoor lights.
Eye Arrangement
Eight small eyes arranged in two horizontal rows, with the lateral eyes often paired and the median eyes set on a slight raised tubercle, typical of the family Araneidae.
Leg Characteristics
Long, strong legs featuring prominent spines and distinct dark and light banding patterns. Spiders hang head-down in the web center, using their legs to detect vibrations from trapped prey.
Venom & Safety Information
Venom Information
Neurotoxic and proteolytic venom designed strictly for subduing insect prey. It has virtually no significant medical impact on humans.
Medical Significance
Harmless to humans. A bite may cause minor, localized pain, slight redness, or mild swelling similar to a mosquito bite, resolving quickly without medical intervention.
Safety Recommendations
No special precautions needed. If found near a doorway, the spider can be gently relocated using a cup and a piece of paper. Leave them alone to enjoy natural pest control.
Habitat & Behavior
Habitat & Range
Found widely across North and South America. Prefers gardens, woodlands, forest edges, and human-made structures such as porches, eaves, and exterior walls where outdoor lights attract flying insects.
Behavior & Temperament
Nocturnal hunters that rebuild or repair their orb webs nightly. They spend daylight hours hiding in nearby foliage or retreat structures, resting head-down in the web at night. Docile and non-aggressive toward humans.
Diet & Prey
Generalist predator feeding primarily on flying insects such as moths, beetles, mosquitoes, flies, and small wasps caught in the sticky spiral of the orb web.
Seasonal Activity
Most active and noticeable during late summer and autumn when adults reach maximum size and females construct egg sacs before dying off with the first hard frosts.
Description
The Spotted Orb-Weaver is a master architect of the night, spinning intricate, wheel-shaped webs to catch unsuspecting flying insects. With its distinctive hairy, patterned abdomen and nocturnal habits, it is a fascinating and beneficial resident of suburban backyards and natural habitats alike.
Key Features
Bulbous abdomen with variable leaf or cross patterns, heavily spined and banded legs, nocturnal web-building habit, and the classic vertical orb web structure.
Similar Species
Cross Orb-Weaver (Araneus diadematus), which features a more prominent white cross marking on the abdomen, and other Neoscona species, which require microscopic examination of genitalia for definitive separation.
Life Cycle
Females construct silken egg sacs containing hundreds of eggs in autumn, attaching them to sheltered surfaces. Spiderlings hatch in spring, disperse via ballooning, and mature by late summer or autumn.
Ecological Importance
Acts as a primary natural regulator of flying insect populations, helping control pests around homes, gardens, and agricultural ecosystems.
Conservation Status
Not evaluated by the IUCN, but populations are secure, widespread, and abundant throughout their natural range.
Interesting Facts
Many orb-weavers consume their old webs daily to recycle proteins before spinning a fresh one just before dusk. They are also capable of sensing microscopic shifts in air current and web tension.
Photography Tips
Best photographed at night using a macro lens and ring flash or external diffuser to highlight the intricate patterns on the abdomen and the fine details of the sticky orb web.
Identified: 2026-10-08T03:01:46.134154