Spotted Orb-Weaver, Barn Spider
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae
Physical Description
Robust body featuring an oval to slightly triangular abdomen and a distinctly hairy cephalothorax. The abdomen shows slight shoulder humps near the front, typical of many orb-weavers, and is densely covered in short setae along with prominent, spine-like macrosetae on the legs.
Size Estimate
Medium to large size, with a body length typically ranging from 10 to 18 millimeters for females, and a leg span reaching up to 30 to 40 millimeters. This specimen appears to be an adult or sub-adult.
Coloration & Markings
Warm reddish-brown to yellowish-orange base coloration on the cephalothorax and legs, contrasted by a darker brown or grayish-brown abdomen marked with a distinct pattern of pale spots, chevrons, and often a central cross-like or leaf-shaped folium design.
Web Type
Vertical orb web constructed with sticky spiral threads and a non-sticky structural frame, typically built in open spaces between vegetation, porches, or structures to catch flying insects.
Eye Arrangement
Eight eyes arranged in two distinct rows of four (anterior and posterior lateral pairs often touching or closely grouped, with central median eyes forming a trapezoid), characteristic of the Araneidae family.
Leg Characteristics
Long, robust legs featuring prominent, heavy spination (macrosetae) along every segment, and distinct dark and light banding patterns.
Venom & Safety Information
Venom Information
Contains mild neurotoxic venom used primarily to immobilize insect prey. It is not considered dangerous to humans or pets.
Medical Significance
Harmless to humans. A bite may cause minor, localized pain, redness, or swelling similar to a mild mosquito bite, requiring no special medical treatment beyond basic first aid.
Safety Recommendations
No special safety measures needed other than avoiding direct handling with bare hands if you wish to prevent accidental defensive bites. Easily relocated using a cup and a piece of paper.
Habitat & Behavior
Habitat & Range
Found widely across North America, typically inhabiting gardens, woodland edges, barns, and around outdoor lighting where flying insects congregate.
Behavior & Temperament
Docile and non-aggressive; constructs webs at night or dusk and often retreats to a nearby hiding spot or sits at the hub during the day. Defensive behavior usually involves dropping from the web or retreating rather than biting.
Diet & Prey
Generalist nocturnal predator feeding primarily on flying insects such as moths, beetles, mosquitoes, and flies caught in its orb web.
Seasonal Activity
Most active during late summer and autumn when adults reach full size and females produce egg sacs.
Description
The Spotted Orb-Weaver is a master architect of the night, spinning intricate circular webs that catch a myriad of flying insects. With its hairy legs, prominent spines, and warm brown tones, it is a fascinating and beneficial resident of gardens and rural structures, posing no threat to humans.
Key Features
Heavily spined legs, distinctive reddish-brown coloration, patterned oval abdomen with faint shoulder humps, and the construction of a vertical orb web.
Similar Species
Cross Orb-Weaver (Araneus diadematus), which features a prominent white cross pattern on the abdomen, and other Neoscona species which require close examination of genitalia for definitive separation.
Life Cycle
Females construct silken egg sacs in sheltered crevices or foliage in autumn, containing hundreds of eggs. Spiderlings hatch in spring, dispersing via ballooning before maturing through a series of molts.
Ecological Importance
Acts as an effective natural pest control agent by consuming large numbers of flying insect pests, and serves as an important food source for birds and small mammals.
Conservation Status
Not evaluated by the IUCN, but populations are secure, widespread, and abundant across their natural range.
Interesting Facts
Many orb-weavers consume their own webs daily to recycle proteins before spinning a fresh one just before dusk.
Photography Tips
Photograph from the side or slightly above to capture the full dorsal pattern and leg spination. Use natural directional lighting or a diffused flash to highlight the texture without creating harsh glares.
Identified: 2026-09-15T23:14:29.103685