Hentz Orb-Weaver, Spotted Orb-Weaver, Barn Spider
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae
Physical Description
Robust body structure featuring a large, bulbous, oval-shaped abdomen and a distinct, smaller cephalothorax. Marked sexual dimorphism is present, with females being significantly larger, rounder, and more robust than males. The body surface has a slightly velvety or finely hairy texture.
Size Estimate
Body length ranges from 9 to 19 mm for adult females, with a leg span of roughly 25 to 40 mm. This specimen appears to be a mature, gravid female.
Coloration & Markings
Variable coloration ranging from yellow-brown to reddish-brown or dark grey. The large abdomen often features a distinct cross-like pattern or series of spots and chevron markings along the dorsal surface, accompanied by subtle lighter and darker mottling.
Web Type
Vertical orb web constructed using sticky silk spirals, typically measuring up to two feet across. Usually built at night in open spaces, near outdoor lights, or attached to structures like walls, fences, and porches, and frequently taken down by morning.
Eye Arrangement
Eight small eyes arranged in two rows of four on the anterior portion of the cephalothorax, typical of the orb-weaver family Araneidae, with lateral eyes often grouped in pairs.
Leg Characteristics
Moderately long, robust legs featuring distinct dark and light banding, prominent spines, and specialized claws for manipulating silk and navigating the orb web without getting stuck.
Venom & Safety Information
Venom Information
Contains neurotoxic and proteolytic venom designed strictly to immobilize invertebrate prey. It has low potency regarding vertebrates and poses no serious chemical threat to humans.
Medical Significance
Harmless to humans. A bite is rare and typically only occurs if the spider is directly squeezed or trapped against the skin, resulting in mild, localized pain, redness, or swelling comparable to a mosquito bite.
Safety Recommendations
No special safety measures required beyond basic awareness. If found inside or near doorways, gently guide the spider into a container using a piece of paper and release it outdoors in a garden or shrub.
Habitat & Behavior
Habitat & Range
Found widely across North America, particularly east of the Rocky Mountains. Prefers gardens, woodland edges, scrublands, and human-made structures such as building exteriors, porches, and fences where outdoor lighting attracts prey.
Behavior & Temperament
Docile and non-aggressive. Nocturnal hunter that constructs and repairs its web at night, often retreating to a nearby crevice, leaf, or corner during daylight hours, though some remain in the web center.
Diet & Prey
Generalist predator feeding on flying insects including moths, beetles, flies, mosquitoes, and wasps captured directly in its vertical orb web.
Seasonal Activity
Most active during late summer and autumn when adults reach full size, build prominent webs, and engage in mating before cooler winter weather arrives.
Description
The Hentz Orb-Weaver is a familiar and beneficial nocturnal architect of the garden. With its stout, round abdomen and reddish-brown tones, it spins intricate, wheel-like orb webs designed to intercept flying nighttime insects. Though its nightly construction and impressive size can startle homeowners, it is entirely harmless and serves as a natural pest controller.
Key Features
Large, bulbous, oval-shaped abdomen, reddish-brown to yellowish base coloration with subtle dorsal markings or cross patterns, robust banded legs, and the construction of a temporary vertical orb web.
Similar Species
Other orb-weavers in the genus Neoscona or Araneus, such as the Barn Spider (Araneus cavaticus) and the Marbled Orb-Weaver (Araneus marmoreus), which can be distinguished by specific abdominal color patterns and structural nuances.
Life Cycle
Females construct silken egg sacs containing hundreds of eggs in late autumn, attached to protected sheltered areas. Spiderlings hatch in spring, disperse via ballooning, and go through multiple molts to reach maturity by late summer or fall.
Ecological Importance
Acts as an effective natural regulator of flying insect populations, helping control common garden pests, mosquitoes, and agricultural nuisances.
Conservation Status
Secure and widespread, with stable populations distributed across its native range and no current conservation threats.
Interesting Facts
Many orb-weavers systematically consume and recycle their own webs every single morning to recover proteins and moisture before retreating to rest for the day.
Photography Tips
Best photographed at night using a macro lens and a diffused flash to capture the intricate details of the dorsal markings and the structure of the orb web without disturbing the spider.
Identified: 2026-09-17T20:40:33.493494