Hentz Orb-Weaver, Spotted Orbweaver, Barn Spider
Neoscona crucifera
Family Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include large, bulbous abdomens in females, robust hairy legs, and the ability to spin intricate wheel-shaped webs.
Physical Description
Robust body with a large, rounded, bulbous abdomen that often features a slight pointed hump near the front. The cephalothorax is compact and covered in fine setae. This specimen is a gravid or well-fed adult female, showing pronounced sexual dimorphism typical of orb-weavers where females are significantly larger and bulkier than males.
Size Estimate
Body length approximately 12 to 18 millimeters for females, with a leg span reaching around 30 to 45 millimeters. This specimen is a mature adult.
Coloration & Markings
Dark brown to reddish-brown base coloration. The abdomen displays mottled dark brown and black patterns with subtle lighter highlights, characteristic of the darker color morphs of this species. The legs feature distinct dark and light banding.
Web Type
Builds a classic, large vertical orb web used to intercept flying insect prey. These webs are typically constructed in the evening among structures, trees, or garden plants, and are often taken down and rebuilt nightly.
Eye Arrangement
Eight eyes arranged in two rows of four on the anterior portion of the cephalothorax, typical of the Araneidae family, with lateral eyes often grouped in pairs.
Leg Characteristics
Moderately long, robust legs covered in hairs and spines, featuring prominent dark and light rings or bands. Legs are typically spread wide in a defensive or resting posture.
Venom & Safety Information
Venom Information
Contains mild neurotoxic venom designed strictly to immobilize small invertebrate prey. It poses no chemical threat to human health.
Medical Significance
Harmless to humans. A bite is extremely rare, usually occurring only if the spider is directly squeezed or trapped against the skin, resulting in minor, localized pain and redness comparable to a mild ant sting.
Safety Recommendations
No special safety measures required. If found indoors or in an inconvenient spot, gently coax the spider into a cup using a piece of card and release it safely outdoors.
Habitat & Behavior
Habitat & Range
Found across North America, particularly in the eastern and central regions. Prefers gardens, woodland edges, and human structures such as porches, walls, and fences where outdoor lighting attracts flying prey.
Behavior & Temperament
Nocturnal web-builder that typically retreats to a nearby hiding spot or sits in the center of its web at night. Docile and non-aggressive, fleeing or dropping from the web when disturbed rather than biting.
Diet & Prey
Feeds primarily on flying insects such as moths, beetles, mosquitoes, and flies captured in its vertical orb web.
Seasonal Activity
Most active and noticeable during late summer and autumn when adults reach full size, mate, and lay eggs before dying off with the first heavy frosts.
Description
The Hentz Orb-Weaver is a familiar and beneficial garden resident, recognized by its robust, heavily patterned body and expert engineering skills. Often noticed in the fall when they reach maximum size, these orb-weavers serve as master pest controllers around homes and gardens, quietly spinning intricate wheel webs each evening to catch flying insects.
Key Features
Large bulbous abdomen, distinctive reddish-brown to dark brown mottled coloration, prominently banded legs, and the construction of a large vertical orb web.
Similar Species
Other Araneus and Neoscona species, such as the Barn Spider (Araneus cavaticus) or Shamrock Orbweaver (Araneus trifolium). Distinguished by specific abdominal markings and subtle structural variations in the genitalia.
Life Cycle
Females construct silk egg sacs in sheltered crevices during autumn, depositing hundreds of eggs. Spiderlings emerge in spring, dispersing via ballooning. Adults mature by late summer through autumn.
Ecological Importance
Acts as a primary natural regulator of flying insect populations, helping to control garden pests and mosquitoes while serving as prey for birds and wasps.
Conservation Status
Secure and widespread, with stable populations across its native range, facing no immediate conservation threats.
Interesting Facts
Many orb-weavers consume their old webs daily to recycle the proteins used in silk production before spinning a fresh web every evening.
Photography Tips
Photograph at night when the spider is active in the center of its web. Use a macro lens with a ring flash or off-camera light to highlight the intricate patterns on the abdomen while avoiding harsh shadows.
Identified: 2026-09-26T18:15:22.140450