Spotted Orbweaver, Hentz Orbweaver, Barn Spider
Neoscona crucifera
Family Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include building vertical wheel-shaped webs, having eight similar eyes in two rows, and stout, hairy bodies adapted for web construction.
Physical Description
The spider features a robust, oval-shaped abdomen that is slightly wider near the front and tapers toward the rear, characteristic of many female orbweavers. The cephalothorax is narrower, covered in fine setae. Sexual dimorphism is prominent, with females being significantly larger and more robust than males.
Size Estimate
Body length is approximately 10 to 18 millimeters for females, with a leg span reaching up to 35 to 45 millimeters. This specimen appears to be a mature adult female based on her robust, swollen abdomen.
Coloration & Markings
Coloration varies widely from yellowish-brown, orange, to dark reddish-brown. The abdomen typically displays a distinct leaf-shaped or spotted pattern, sometimes featuring a series of dark spots or a light-colored central band bordered by darker pigmentation.
Web Type
Builds a classic vertical orb web, characterized by a spiral of sticky capture threads set on a sturdy framework of non-sticky radial threads. The web is typically constructed at night across open spaces, doorways, or near outdoor lighting to intercept flying insects.
Eye Arrangement
Features eight small eyes arranged in two distinct horizontal rows on the anterior portion of the cephalothorax, consisting of four median eyes forming a square and two lateral pairs, typical of the orb-weaver family.
Leg Characteristics
Legs are moderately long, robust, and heavily spined, featuring distinct dark banding or rings. They are often held outward in a sprawling stance when resting on the web or retreat.
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
Harmless to humans. A bite may cause minor, localized pain, redness, or mild swelling similar to a mosquito bite, but it carries no medical significance.
Safety Recommendations
No special precautions needed beyond avoiding accidental contact with webs when walking outside at night. If one is found inside a house, gently relocate it outside using a cup and a piece of paper.
Habitat & Behavior
Habitat & Range
Found widely across North America, typically inhabiting gardens, woodlands, porches, and the exterior walls of buildings where outdoor lighting attracts flying prey.
Behavior & Temperament
Nocturnal web-builders that generally remain hidden in a nearby retreat or at the center of the web during the night, retreating to shelter during daylight hours. They are docile, non-aggressive, and only bite if trapped or squeezed.
Diet & Prey
Feeds primarily on flying nocturnal 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 females reach full adult size and construct prominent webs to lay eggs before winter.
Description
The Spotted Orbweaver is a magnificent and beneficial nocturnal architect often discovered hanging quietly at the center of its intricate wheel-shaped web. With a stout, patterned abdomen and long, banded legs, this garden sentinel serves as a master pest controller around homes and yards, shimmering quietly in the dark while waiting for passing prey.
Key Features
Robust, hairy body, distinctive leaf-like or spotted abdominal patterns, vertical orb web structure, and nocturnal activity centered around outdoor lights.
Similar Species
Neoscona domiciliorum (Redlegged Orbweaver), which features brighter reddish legs and more vivid markings, and Araneus cavaticus (Barn Spider), which generally has a lighter, more uniform tan coloration.
Life Cycle
Females construct silken egg sacs in protected crevices or foliage during autumn, containing hundreds of eggs. Spiderlings emerge in spring, dispersing via ballooning before maturing by late summer or autumn.
Ecological Importance
Acts as a vital natural predator of flying insect populations, helping to control pests in gardens, agricultural areas, and around human habitations.
Conservation Status
Not evaluated by the IUCN, but populations are widespread, stable, and highly adaptable to human-modified environments.
Interesting Facts
Many orb-weaving spiders consume and rebuild their entire large web every single night to maintain the stickiness of the capture threads and recycle the silk proteins.
Photography Tips
Use a macro lens with a flash or external flashlight to illuminate the spider clearly against the dark background of its nocturnal web, focusing sharply on the dorsal abdominal patterns.
Identified: 2026-09-10T11:33:49.662456