Hentz Orb-Weaver, Spotted Orbweaver
Neoscona crucifera
Family Araneidae (Orb-Weavers), Order Araneae
Physical Description
The spider has a robust, highly rounded, bulbous abdomen typical of many orb-weavers, paired with a smaller cephalothorax. The body is covered in fine, short hairs, giving it a slightly matte appearance rather than a glossy one. Sexual dimorphism is prominent, with females being significantly larger and heavier-bodied than males.
Size Estimate
Body length ranges from 9 to 19 millimeters for females, with a leg span of roughly 25 to 40 millimeters. This specimen appears to be a mature or subadult female.
Coloration & Markings
The base coloration ranges from light yellowish-brown to reddish-brown or grayish. The dorsal abdomen features a distinct pattern of darker markings, often including a central cross or leaf-like (folium) design outlined in pale edges, with small paired spots.
Web Type
Builds a classic vertical orb web, a large, wheel-shaped snare made of sticky spiral threads designed to intercept flying insects. These webs are typically constructed in the evening on the exteriors of buildings, porches, or between garden plants.
Eye Arrangement
Has eight small eyes arranged in two rows of four on the anterior portion of the cephalothorax, typical of the Araneidae family, with the lateral eyes often grouped together.
Leg Characteristics
Legs are moderately long, stout, and visibly banded with dark brown and tan rings. They are equipped with numerous spines for grasping prey and are held outward in a typical resting posture on the web.
Venom & Safety Information
Venom Information
Produces a mild neurotoxic venom tailored specifically for immobilizing small invertebrate prey. It poses no chemical threat to humans.
Medical Significance
Not medically significant. Bites are extremely rare, usually only occurring if the spider is squeezed or trapped against human skin. Symptoms are typically limited to minor, localized pain, redness, or swelling similar to a mild mosquito bite.
Safety Recommendations
No special safety measures are required. If a spider must be relocated from a doorway, gently guide it into a container using a piece of card and release it into nearby garden foliage.
Habitat & Behavior
Habitat & Range
Found widely across North America, particularly in the eastern and central regions. Prefers woodland edges, gardens, and human structures such as the sides of houses, porches, and fences where outdoor lighting attracts flying prey.
Behavior & Temperament
Nocturnal web-builders that often hide in a retreat or sit quietly in the center of the web during the night, retreating to dark crevices or foliage during the day. They are docile, non-aggressive, and will retreat or drop from the web rather than bite if disturbed.
Diet & Prey
Feeds primarily on flying nocturnal insects such as moths, beetles, mosquitoes, and flies caught in its orb web. Prey is quickly immobilized by a venomous bite and wrapped in silk.
Seasonal Activity
Most active and visible during late summer and autumn when adults reach full size and females prepare egg sacs. They overwinter primarily as eggs within protected sacs.
Description
The Hentz Orb-Weaver is a familiar and beneficial nocturnal neighbor, frequently establishing its intricate circular webs near exterior lights on houses. With its beautifully patterned, bulbous abdomen and gentle disposition, this orb-weaver serves as a master pest controller, quietly eliminating countless flying insects around human dwellings without posing any danger.
Key Features
Bulbous, rounded abdomen with a distinct cross or leaf-like dorsal pattern, banded legs, and the construction of a temporary or permanent vertical orb web near vertical surfaces.
Similar Species
Other spotted orb-weavers in the genus Neoscona or Araneus species (such as the Barn Spider, Araneus cavaticus). Distinguished by exact abdominal folium patterns and genital morphology.
Life Cycle
Females construct papery silk egg sacs in sheltered cracks or crevices during autumn, depositing hundreds of eggs. Spiderlings emerge in spring, dispersing via ballooning. They undergo several molts to reach maturity by late summer.
Ecological Importance
Acts as a primary natural control agent for populations of flying insect pests, including mosquitoes and agricultural pests, while serving as prey for birds and wasps.
Conservation Status
Not evaluated by the IUCN, but populations are widespread, stable, and highly adaptable to human-modified environments.
Interesting Facts
Many orb-weavers consume their entire web daily, often before dawn, to recycle the protein-rich silk proteins and rebuild a fresh web the following evening.
Photography Tips
Photograph at night using a flash to highlight the intricate patterns on the abdomen and to catch the reflective sheen of the orb web. Maintain a gentle approach to avoid startling the spider back into hiding.
User Notes
Found in web in side of house
Identified: 2026-08-31T00:31:18.517161