Spotted Orb-Weaver, Hentz Orb-Weaver, Barn Spider
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae
Physical Description
Robust, rounded abdomen with a hairy or bristly texture and a distinctively stout cephalothorax. Females are significantly larger than males, displaying typical orb-weaver sexual dimorphism with a swollen, bulbous abdomen designed for egg production.
Size Estimate
Body length ranges from 9 to 19 millimeters for females, with a leg span reaching up to 3 to 4 centimeters. This appears to be a mature or near-mature adult specimen.
Coloration & Markings
Warm brownish, reddish-orange, or yellowish-brown base coloration. The abdomen often features a faint cross or leaf-like pattern flanked by spots, though color intensity can vary widely depending on lighting and individual morphs.
Web Type
Vertical orb web constructed at night, featuring a sticky spiral and a central hub where the spider typically waits head-down for prey.
Eye Arrangement
Eight eyes arranged in two rows, with the lateral eyes often paired and the median eyes set on a slightly raised tubercle, typical of the orb-weaver family.
Leg Characteristics
Strong, moderately long legs covered in visible hairs and spines, often showing darker banding. They are held in a typical splayed orb-weaver posture when resting on the web.
Venom & Safety Information
Venom Information
Contains mild neurotoxic venom tailored for subduing invertebrate prey. It poses no chemical threat to humans or larger mammals.
Medical Significance
Harmless to humans. A bite is extremely rare, usually only occurring if the spider is directly squeezed or trapped against the skin, resulting in mild, localized pain and minor swelling similar to a mosquito bite.
Safety Recommendations
No special precautions needed. If found indoors or in an inconvenient spot, gently coax the spider into a container using a piece of card and release it safely outdoors.
Habitat & Behavior
Habitat & Range
Found widely across North America, particularly in eastern and central regions. Prefers gardens, woodlands, porches, exterior walls, and areas near outdoor lights where flying insects congregate.
Behavior & Temperament
Nocturnal web-builder that constructs a new orb web each evening and frequently consumes the old one before dawn. Highly docile and non-aggressive toward humans, typically retreating or dropping to the ground if disturbed.
Diet & Prey
Generalist predator feeding on nocturnal flying insects such as moths, beetles, mosquitoes, and flies captured in its vertical orb web.
Seasonal Activity
Most active and visible during late summer and autumn when adults reach full size, build prominent webs, and prepare for mating before dying off with the first hard frosts.
Description
The Spotted Orb-Weaver is a familiar and beneficial nocturnal neighbor, frequently spotted hanging patiently in the center of its intricate wheel-shaped web near outdoor lighting. With its stout, hairy body and warm golden-brown hues, this master architect spends its nights successfully intercepting flying pests before dismantling its web at the break of dawn.
Key Features
Stout, hairy, bulbous abdomen, nocturnal web-building habit, distinctive reddish-brown to yellowish coloration, and presence in vertical orb webs near human dwellings.
Similar Species
Neoscona domiciliorum (Red-legged Orb-Weaver) and Araneus cavaticus (Barn Spider), distinguished primarily by subtle abdominal markings, leg banding patterns, and geographic distribution.
Life Cycle
Females construct silken egg sacs in sheltered cracks or vegetation during autumn, laying hundreds of eggs. Spiderlings emerge in spring, often dispersing via ballooning on wind currents.
Ecological Importance
Acts as a highly effective natural pest control agent by consuming large quantities of flying agricultural and household insect pests, helping to balance local invertebrate populations.
Conservation Status
Secure and widespread, with stable populations facing no significant conservation threats or IUCN risk status.
Interesting Facts
These spiders are prolific builders, often completely consuming and recycling their entire silk web every single night to recover proteins before resting hidden during daylight hours.
Photography Tips
Use a macro lens with a flash or external flashlight at night to illuminate the spider against the dark background, capturing sharp details of the hairy abdomen and leg structure while keeping a safe distance.
Identified: 2026-10-10T01:24:36.782617