Hentz Orb-Weaver, Spotted Orb-Weaver, Barn Spider
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include strong sexual dimorphism, excellent vision for web-building and navigation, and the construction of vertical wheel-shaped webs.
Physical Description
The spider has a robust, rounded, bulbous abdomen typical of female orb-weavers, with a smaller cephalothorax. The body appears velvety and hairy due to a dense covering of fine setae. Distinctive anatomical features include prominent spinnerets and a wide, stout abdomen that indicates she is likely a mature female, possibly carrying eggs.
Size Estimate
Body length is approximately 15 to 20 millimeters, with a leg span reaching around 30 to 40 millimeters. This specimen is a mature adult female, displaying the typical larger proportions compared to males of the same species.
Coloration & Markings
Base coloration ranges from brownish-gray to reddish-brown. The abdomen features muted, mottled earth tones with subtle darker markings and sometimes a faint cross-like or leaf-like pattern, though coloration can vary widely depending on age, humidity, and exact geographic location.
Web Type
Builds a classic vertical orb web consisting of sticky spiral capture threads and non-sticky structural radii. These webs are typically constructed in late afternoon or evening in gardens, porches, or near exterior lights to intercept flying nocturnal insects.
Eye Arrangement
Arranged in two rows of four eyes each on a raised anterior tubercle, typical of the Araneidae family, with lateral eyes often grouped in pairs and median eyes forming a central quadrangle.
Leg Characteristics
Legs are moderately long, stout, and covered in fine hairs and prominent spines. They feature subtle dark banding and are typically held in a splayed, defensive or resting posture along the plane of the body or web.
Venom & Safety Information
Venom Information
Venom is specialized for subduing invertebrate prey. It is low in potency relative to humans and is generally considered non-toxic to people.
Medical Significance
Harmless to humans. Bites are extremely rare and typically only occur if the spider is directly squeezed or trapped against the skin. Symptoms, if any, are limited to mild, localized pain or redness similar to a mosquito bite.
Safety Recommendations
No special safety measures required as they are harmless. If found indoors, gently guide the spider into a container using a piece of cardstock and relocate it to an outdoor garden or porch.
Habitat & Behavior
Habitat & Range
Commonly found throughout North America, particularly in the eastern and central regions. Prefers gardens, woodlands edges, shrubs, and around human structures such as porches, exterior walls, and eaves where artificial lighting attracts prey.
Behavior & Temperament
Docile and non-aggressive. Active primarily at night, often remaining hidden in a retreat or resting near the center of the web during the day. When disturbed, they typically drop from the web or retreat to safety rather than bite.
Diet & Prey
Feeds on a wide variety of flying insects, including moths, beetles, mosquitoes, and flies. Prey is intercepted by the sticky orb web, rapidly wrapped in silk, and subdued with venom.
Seasonal Activity
Most active and noticeable during late summer and autumn when females reach maximum size and maturity. Overwinters in the egg stage, with adults dying off with the first hard frosts.
Description
The Hentz Orb-Weaver is a familiar and beneficial garden resident, recognized by its robust, rounded brown body and nocturnal web-building habits. As a master architect of the night, it constructs intricate wheel-shaped webs to catch flying pests before dismantling or consuming parts of the web by morning. Their gentle demeanor and pest-control utility make them wonderful neighbors around homes and gardens.
Key Features
Large, bulbous, hairy brown abdomen; robust spiny legs; nocturnal orb-web construction; preference for hanging near outdoor lights and building vertical wheel webs.
Similar Species
Other orb-weavers such as Neoscona domiciliorum (The Redfemered Orb-Weaver) and Araneus diadematus (Cross Orb-Weaver). Distinguished by subtle abdominal patterns, geographic range, and leg banding.
Life Cycle
Mates in late summer and autumn. Females construct papery silk egg sacs containing hundreds of eggs, attaching them to sheltered surfaces or vegetation. Spiderlings hatch in spring, often dispersing via ballooning on wind currents. Lifespan is typically one year.
Ecological Importance
Serves as an essential natural predator of flying insect pests including mosquitoes and agricultural pests. Forms a vital food source for insectivorous birds, small mammals, and predatory wasps.
Conservation Status
Not evaluated by the IUCN, but populations are secure, widespread, and highly adaptable to human-altered environments.
Interesting Facts
Many orb-weavers consume and recycle their entire web nightly to recover proteins used in silk production. They are also capable of sensing microscopic vibrations through their web to pinpoint the exact struggling location of trapped prey.
Photography Tips
Photograph during early evening or nighttime using a macro lens with a flash to highlight surface textures and leg spination. Capture dorsal views of the abdomen to clearly show color patterns and diagnostic markings.
Identified: 2026-09-12T16:28:17.318832