Barn Spider, Hentz Orb-Weaver
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae. Characterized by robust bodies, excellent vision, and the ability to spin classic wheel-shaped orb webs.
Physical Description
The spider has a robust, bulky appearance with a rounded, somewhat hairy abdomen and a distinctively patterned cephalothorax. Sexual dimorphism is prominent, with females being significantly larger and more rotund than males.
Size Estimate
Body length typically ranges from 9 to 19 mm for females and 8 to 13 mm for males, with a leg span extending up to 3 to 4 cm. This specimen appears to be an adult or sub-adult.
Coloration & Markings
Features a brownish or reddish-orange base coloration with complex markings on the abdomen, including a distinct cross-like pattern or a series of light and dark spots and chevrons.
Web Type
Builds a vertical orb web, a classic wheel-shaped trap usually constructed at night in or around structures, porches, and gardens, often consuming and rebuilding it daily.
Eye Arrangement
Eight eyes arranged in two rows of four, typical of orb-weavers, with lateral eyes often grouped together and median eyes set on a slight tubercle.
Leg Characteristics
Legs are moderately long, thick, and heavily spined with distinct dark and light banding patterns. They are typically held outstretched in a defensive or waiting posture.
Venom & Safety Information
Venom Information
Possesses mild neurotoxic venom used primarily to immobilize insect prey. It is not potent enough to cause serious harm to humans.
Medical Significance
Not medically significant. A bite may cause minor, localized pain, redness, or swelling similar to a mosquito bite, resolving quickly without medical intervention.
Safety Recommendations
Keep outside lights turned off when not needed to avoid attracting the insects that draw these spiders near doorways. If relocation is necessary, gently guide the spider into a container using a piece of card.
Habitat & Behavior
Habitat & Range
Found widely across North and South America. Prefers human-made structures such as barns, porches, and fences, as well as gardens, woodlands, and fields where prey is abundant.
Behavior & Temperament
Generally nocturnal and reclusive during the day, hiding in a nearby retreat or at the hub of the web. Very docile and reluctant to bite unless directly squeezed or trapped.
Diet & Prey
Feeds primarily on flying insects such as moths, mosquitoes, beetles, and flies caught in its vertical orb web.
Seasonal Activity
Most active and visible during late summer and autumn when adults reach full size and construct larger webs to feed and mate before cooler weather arrives.
Description
The Barn Spider is a familiar and beneficial nocturnal architect often found gracing back porches and outbuildings. With its characteristic hairy body and intricate patterned abdomen, it serves as an effective natural pest controller, quietly spinning its geometric orb web to catch nighttime flying insects.
Key Features
Hairy, robust body, distinctive abdominal markings often forming a cross or leaf-like pattern, distinct leg banding, and construction of a vertical orb web near vertical surfaces.
Similar Species
Other Araneus species or Neoscona species, such as Neoscona domiciliorum (The Redfemre Orb-Weaver), which can be distinguished by specific abdominal spot patterns and coloration.
Life Cycle
Mating occurs in autumn, after which females deposit eggs into a silken sac attached to surfaces or hidden in vegetation. Spiderlings hatch in spring and disperse via ballooning.
Ecological Importance
Acts as a primary regulator of flying insect populations around human dwellings and natural environments, serving as a crucial food source for birds and small mammals.
Conservation Status
Not evaluated by the IUCN, but populations are widespread, stable, and thriving across their native range.
Interesting Facts
These spiders frequently take down and completely consume their entire web every single morning, resting during the day before spinning a brand new web each evening.
Photography Tips
Best photographed at night using a macro lens and a diffused flash to highlight the intricate patterns on the abdomen and the fine details of the orb web.
Identified: 2026-08-21T02:34:56.800843