Hentz Orb-Weaver, Spotted Orb-Weaver, Barn Spider
Neoscona crucifera
Family Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include the construction of vertical orb-shaped webs, excellent vision for detecting motion in low light, and typically robust, bulbous abdomens in females.
Physical Description
The spider has a rounded, bulky abdomen and a distinct cephalothorax covered in fine hairs. Females are significantly larger and more robust than males, with a swollen abdomen capable of storing eggs.
Size Estimate
Body length ranges from 10 to 18 mm for females, with a leg span of roughly 25 to 40 mm. This appears to be a mature or near-mature female.
Coloration & Markings
Base coloration ranges from yellowish-brown to reddish-orange or dark brown. The abdomen often features a patterned dorsal folium with distinct whitish spots and darker margins, though coloration can vary considerably.
Web Type
Builds a classic vertical orb web featuring a sticky spiral and strong radial threads, often constructed in the evening across open spaces, porches, or between structural elements.
Eye Arrangement
Eight eyes arranged in two distinct rows on the anterior cephalothorax, consisting of lateral pairs and central medians, typical for identifying orb-weaving spiders.
Leg Characteristics
Long, robust legs featuring distinct dark banding or rings, covered in fine spines and hairs used for sensing vibrations in the web.
Venom & Safety Information
Venom Information
Neurotoxic venom tailored specifically for immobilizing small invertebrate prey. It has virtually no significant effect on humans.
Medical Significance
Not medically significant. A bite may cause minor, temporary localized pain or redness similar to a mild mosquito bite, resolving on its own without professional intervention.
Safety Recommendations
Simply leave the spider alone if it is outdoors. If one wanders indoors, gently capture it under a glass and release it outside into a garden or shrubbery.
Habitat & Behavior
Habitat & Range
Found throughout North America, frequently inhabiting gardens, woodland edges, and the exterior walls of houses, particularly around outdoor lighting where insect prey gathers.
Behavior & Temperament
Nocturnal web-weavers that often retreat to a hidden shelter or sit near the hub of the web during the night, hanging upside down. They are docile, non-aggressive, and rarely bite unless directly trapped or squeezed.
Diet & Prey
Feeds primarily on flying insects such as moths, beetles, mosquitoes, and flies caught in the sticky spiral of the orb web.
Seasonal Activity
Most visible and active during late summer and autumn when females reach full adult size and construct egg sacs.
Description
The Hentz Orb-Weaver is a familiar and welcome guest on back porches and gardens across North America. Known for constructing intricate, wheel-like orb webs overnight, this skilled predator helps regulate flying insect populations. With its stout, reddish-brown body and fascinating nocturnal habits, it is a quintessential representative of the orb-weaver family.
Key Features
Distinctive hairy, bulbous abdomen, reddish-brown to yellowish coloration with subtle dorsal markings, and the habit of constructing a large vertical orb web.
Similar Species
Other Araneus and Neoscona species, such as the Barn Spider (Araneus cavaticus) or Shamrock Orb-Weaver (Araneus trifolium). Distinguishing requires close examination of specific abdominal patterns and genital structures.
Life Cycle
Females construct silk egg sacs in protected crevices during autumn, depositing hundreds of eggs. Spiderlings emerge in spring, dispersing via ballooning before maturing through successive molts over a single season.
Ecological Importance
Serves a vital role in natural pest control by consuming vast numbers of flying insects, while also acting as a food source for birds and small mammals.
Conservation Status
Not evaluated by the IUCN, but populations are widespread, secure, and highly adaptable to human-altered environments.
Interesting Facts
Many orb-weavers consume and rebuild their complex webs nearly every night to recycle proteins and maintain the stickiness of the silk.
Photography Tips
Use a macro lens if possible, though autofocus might struggle on the transparent threads; manual focus is recommended. Photograph from a slight side angle with indirect lighting to highlight patterns and texture.
Identified: 2026-09-30T23:07:59.205067