Spotted Orb-Weaver, Barn Spider, Hentz Orb-Weaver
Neoscona crucifera
Family Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include strong sexual dimorphism, eight eyes arranged in two rows, short stout legs adapted for spinning webs rather than running, and the ability to spin classic wheel-shaped orb webs.
Physical Description
The spider has a rounded, bulbous abdomen and a distinct, smaller cephalothorax covered in fine, hair-like setae. The body is relatively robust with a soft texture due to the dense covering of hairs. Females are significantly larger and bulkier than males, a typical trait of orb-weavers.
Size Estimate
The body length of this specimen appears to be approximately 10 to 15 mm, with a leg span around 25 to 35 mm, consistent with an adult female or a large subadult.
Coloration & Markings
Base coloration ranges from brownish-orange to gray or tan. The abdomen often features a central, leaf-like pattern (folium) outlined in dark brown or black, accompanied by light spots or a series of transverse lines. Legs exhibit distinct dark banding.
Web Type
Builds a vertical, wheel-shaped orb web characterized by a sticky spiral used to capture flying insect prey. These webs are typically constructed at night in gardens, near outdoor lights, or on structures like porches and barns.
Eye Arrangement
Eight eyes arranged in two recurved rows on the anterior portion of the cephalothorax, consisting of lateral pairs and median eyes, typical for the identification of the Araneidae family.
Leg Characteristics
Legs are moderately long, thick, and well-spined, featuring prominent dark and light banding patterns. They lack specialized structures like claw tufts or heavy scopulae, as their primary function is web construction and navigation.
Venom & Safety Information
Venom Information
Possesses mild neurotoxic venom used primarily to immobilize small insect prey. It is not potent to humans and poses no serious health risk.
Medical Significance
Harmless to humans. Bites are rare and typically only occur if the spider is squeezed or trapped against the skin. Symptoms from a bite are generally limited to minor localized pain, redness, or swelling that resolves quickly without medical intervention.
Safety Recommendations
No special precautions needed beyond standard caution. If found inside a home, gently guide the spider into a cup using a piece of paper and release it outdoors where it can catch pests.
Habitat & Behavior
Habitat & Range
Commonly found throughout North America, particularly in eastern and central regions. Prefers gardens, woodlands, meadows, and structural exteriors such as porches, eaves, and barns where artificial lighting attracts nighttime insect prey.
Behavior & Temperament
Docile and non-aggressive toward humans. They are nocturnal web-trappers, often consuming and rebuilding their large orb webs daily. When disturbed, they typically drop to the ground or retreat to a nearby hiding spot.
Diet & Prey
Feeds primarily on flying insects such as moths, beetles, flies, mosquitoes, and wasps trapped in its sticky orb web. Prey is subdued with a quick bite and wrapped in silk before consumption.
Seasonal Activity
Most active and commonly seen during late summer and autumn when females reach maturity and grow to their maximum size.
Description
The Spotted Orb-Weaver is a familiar and beneficial garden resident, recognized by its robust, hairy body and intricate nighttime webs. As master architects of the garden ecosystem, these spiders spend their days hidden or resting near their massive wheel-shaped traps, emerging at dusk to hunt flying pests.
Key Features
Bulbous, hairy abdomen with a variable leaf-like pattern (folium), distinct dark banding on the legs, and the construction of a large, vertical orb web with a distinct open hub.
Similar Species
Can be confused with other orb-weavers such as Neoscona domiciliorum (Redfemur orb-weaver) or Araneus cavaticus (Barn spider). Distinguish by specific abdominal markings, geographic range, and subtle leg coloration variations.
Life Cycle
Females produce papery silk egg sacs containing hundreds of eggs in late autumn, which overwinter before spiderlings hatch in spring. Spiderlings disperse via ballooning. The lifespan of females typically spans one year, ending with the onset of cold weather.
Ecological Importance
Acts as an effective biological control agent by consuming large quantities of flying agricultural pests and household insects, helping to naturally regulate insect populations.
Conservation Status
Not threatened or endangered; populations are stable and widespread throughout their native geographic range.
Interesting Facts
Many orb-weavers consume their entire web each morning to recycle the proteins in the silk before spinning a fresh web the following evening.
Photography Tips
Best photographed at night when they are active on their webs. Use a macro lens with a ring flash or external diffuser to highlight the intricate abdominal patterns and leg banding without disturbing the spider.
Identified: 2026-08-17T08:27:28.350593