Hentz Orb-Weaver, Spotted Orb-Weaver
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae
Physical Description
The spider has a rounded, bulbous abdomen typical of orb-weavers and a smaller, hairy cephalothorax. Females are significantly larger and bulkier than males. The body has a textured, somewhat hairy appearance, which helps with camouflage against bark and building exteriors.
Size Estimate
Body length ranges from 9 to 18 millimeters for females, with a leg span reaching up to 30 to 40 millimeters. This specimen appears to be an adult or sub-adult female based on its robust abdominal proportions.
Coloration & Markings
Coloration varies widely from reddish-brown to dark gray or straw-yellow. The abdomen typically features a distinct folium or central leaf-like pattern, often accompanied by faint spots or transverse markings, providing excellent camouflage.
Web Type
Builds a classic vertical orb web constructed at night, typically measuring one to two feet in diameter. The spider often retires to a nearby retreat or leaf during the day, maintaining a signal line to the center of the web.
Eye Arrangement
Eight eyes arranged in two rows, typical of the Araneidae family. The lateral eyes are often closely spaced, and the median eyes are set on a slightly raised tubercle.
Leg Characteristics
Legs are moderately long, robust, and heavily spined with distinct dark and light banding patterns. They are often held in a sprawling posture when at rest on the web or a vertical surface.
Venom & Safety Information
Venom Information
Contains neurotoxic venom used primarily to subdue insect prey. The venom is specialized for arthropods and has virtually no systemic effect on humans.
Medical Significance
Harmless to humans. A bite is extremely rare and typically causes no more than minor, temporary localized pain, redness, or swelling, comparable to a mild mosquito bite.
Safety Recommendations
No special safety measures are required. If one builds a web in an inconvenient doorway, it can be gently relocated using a cup and a piece of cardboard. Bites can be avoided simply by not pressing bare skin against them.
Habitat & Behavior
Habitat & Range
Found throughout North America, particularly east of the Rocky Mountains. Prefers gardens, woodland edges, and the exterior walls of houses, porches, and outbuildings where outdoor lighting attracts prey.
Behavior & Temperament
Nocturnal hunter that constructs its web in the evening and consumes it at dawn to recycle silk proteins. They are docile, highly reluctant to bite, and will typically drop from the web or retreat when disturbed.
Diet & Prey
Feeds primarily on flying nocturnal insects such as moths, beetles, mosquitoes, and midges caught in its orb web.
Seasonal Activity
Most active and commonly seen during late summer and autumn when adults reach full size, build prominent webs, and engage in mating before dying off with the first hard frosts.
Description
The Hentz Orb-Weaver is a familiar nocturnal architect often found gracing the corners of porches and exterior walls. With its robust, patterned abdomen and intricate wheel-shaped webs, this spider acts as a master pest controller around human habitations, spending its days resting quietly before coming alive at dusk.
Key Features
Robust, hairy, bulbous abdomen with a variable folium pattern, distinct leg banding, and the construction of a large vertical orb web coupled with a nocturnal lifestyle.
Similar Species
Other spotted orb-weavers in the genus Neoscona, such as Neoscona domiciliorum (Barn Spider), and various Araneus species. Distinguishing them often requires close examination of the internal genitalia or subtle variations in abdominal patterning.
Life Cycle
Females construct silk egg sacs in sheltered cracks or crevices during autumn, depositing hundreds of eggs. Spiderlings emerge in spring, dispersing via ballooning on silk threads. They undergo multiple molts to reach maturity by late summer.
Ecological Importance
Serves as an important natural predator of flying insect populations, helping to control pests like mosquitoes and moths around homes and gardens.
Conservation Status
Not evaluated by the IUCN, but populations are secure, widespread, and abundant throughout its natural range.
Interesting Facts
These spiders completely consume and rebuild their large orb webs almost every single night to maintain the sticky silk's structural integrity and recycle valuable proteins.
Photography Tips
Best photographed at night using a macro lens and a diffused flash to capture the intricate details of the dorsal markings and the geometry of the orb web against a dark background.
Identified: 2026-08-31T22:28:53.011570