Hentz Orb-Weaver, Spotted Orbweaver
Neoscona crucifera
Family Araneidae (Orb-Weavers), Order Araneae
Physical Description
The spider has a stout, robust body with a distinctively large, rounded abdomen that tapers slightly toward the rear. The cephalothorax is smaller, densely covered with fine hairs, and positioned just beneath the bulbous abdomen. Females are notably larger and more robust than males, which is typical for orb-weavers.
Size Estimate
Body length ranges from 9 to 19 mm for females, while males are smaller at 8 to 13 mm. Total leg span can reach up to 35 to 40 mm.
Coloration & Markings
Coloration is highly variable, typically featuring shades of brown, reddish-brown, tan, or yellowish-gray. The abdomen often displays a leaf-like or cross-shaped pattern (folium) bordered by darker margins, sometimes accented with distinct white spots or a central line.
Web Type
Builds a large, vertical orb web made of sticky silk spirals connected to strong radial threads, usually constructed in late afternoon or evening in open spaces, near outdoor lights, or attached to structures.
Eye Arrangement
Features eight small eyes arranged in two distinct rows on the anterior portion of the cephalothorax, typical of the orb-weaver family Araneidae, designed primarily for detecting movement and light levels.
Leg Characteristics
Legs are robust, moderately long, and heavily spined with distinct dark and light banding patterns. They are frequently held in a splayed, outstretched posture when the spider rests in the center or edge of its web.
Venom & Safety Information
Venom Information
Possesses mild neurotoxic venom used primarily to immobilize insect prey. It is not potent enough to cause systemic harm or major medical issues in humans.
Medical Significance
Harmless to humans. A bite may cause minor, temporary local pain, mild redness, or swelling similar to a mosquito bite, but medical attention is rarely necessary.
Safety Recommendations
Simply admire from a distance or gently relocate using a container if found in an inconvenient location. Avoid handling bare-handed to prevent accidental defensive bites.
Habitat & Behavior
Habitat & Range
Commonly found across North America, particularly in the eastern and central regions. Prefers gardens, woodland edges, meadows, and the exterior walls of buildings where outdoor lighting attracts flying prey.
Behavior & Temperament
Generally nocturnal or crepuscular, spending daylight hours hidden in a retreat or resting near the edge of the web. Very docile temperament; rarely bites unless trapped directly against human skin.
Diet & Prey
Feeds primarily on flying insects such as moths, beetles, mosquitoes, flies, and occasional grasshoppers captured in its vertical orb web.
Seasonal Activity
Most active during late summer and autumn when adults reach their maximum size and females prepare egg sacs. They overwinter primarily in the egg stage.
Description
The Hentz Orb-Weaver is a quintessential nighttime architect of the garden. With its stout, attractively patterned body resting snugly against structures or suspended in expansive geometric webs, it serves as a master controller of nocturnal insect populations. Despite its somewhat intimidating size and robust abdomen, it is entirely harmless and beneficial to have around homes and gardens.
Key Features
Large, bulbous abdomen with variable brownish coloration and leaf-like or spotted markings; robust, banded legs; construction of a large vertical orb web; nocturnal habit of resting in webs or nearby retreats.
Similar Species
Other orb-weavers such as Neoscona domiciliorum (The Redfemur Orb-Weaver) and Araneus diadematus (Cross Orb-Weaver). Distinguish them by subtle differences in abdominal patterning, leg coloration, and exact geographic range.
Life Cycle
Females construct silken egg sacs in sheltered cracks or vegetation during autumn, containing hundreds of eggs. Spiderlings emerge in spring, dispersing via ballooning before growing through multiple molts to reach maturity by late summer.
Ecological Importance
Acts as an effective natural predator of flying insect pests, helping to control populations of mosquitoes, moths, and agricultural pests while serving as a food source for birds and small mammals.
Conservation Status
Secure and widespread; not threatened or endangered globally.
Interesting Facts
Many orb-weavers consume and rebuild their entire web nearly every night to recycle silk proteins and maintain the stickiness of the capture threads.
Photography Tips
Use a macro lens with a tripod and ring flash or soft external lighting at night when the spider is active in its web to capture sharp details of its dorsal markings and leg banding.
Identified: 2026-09-22T12:30:39.647342