Hentz Orb-Weaver, Spotted Orbweaver
Neoscona crucifera
Araneidae (Orb-Weavers), Order Araneae. Key family characteristics include building vertical, wheel-like orb webs and possessing eight eyes arranged in two rows.
Physical Description
The spider has a stout, oval-shaped abdomen that is slightly wider near the front and tapers toward the rear, characteristic of many orb-weavers. The cephalothorax is smaller, covered in fine hairs, and sits compactly ahead of the large, bulbous abdomen. Females are noticeably larger and more robust than males, which have smaller abdomens and longer legs.
Size Estimate
Body length ranges from 9 to 19 millimeters for females, with a total leg span reaching up to 40 to 50 millimeters. The specimen shown appears to be a mature or sub-adult female.
Coloration & Markings
Base coloration varies from yellowish-brown to reddish-brown or dark brown. The abdomen features a distinct mottled pattern with dark brownish patches, often accompanied by a central leaf-like pattern or a series of light and dark spots, sometimes forming a vague cross or cross-like markings (hence crucifera).
Web Type
A classic vertical orb web featuring a sticky spiral and strong non-sticky radial threads connected to a hub in the center. The web is typically constructed in open spaces, near outdoor lights, or between structural elements to intercept flying insects.
Eye Arrangement
Eight small eyes arranged in two rows on the anterior portion of the cephalothorax, typical of the orb-weaver family Araneidae, consisting of lateral pairs and a central quadrangle.
Leg Characteristics
The legs are moderately long, robust, and heavily spined with noticeable dark and light banding patterns. They are frequently held in a splayed, ready posture on the web to detect vibrations from struggling prey.
Venom & Safety Information
Venom Information
Contains mild neurotoxic and proteolytic venom tailored for subduing invertebrate prey. It is not potent enough to cause systemic harm or serious medical issues in humans.
Medical Significance
Harmless to humans. A bite may cause minor, localized pain, slight redness, or swelling similar to a mild mosquito bite, subsiding within a few hours without medical intervention.
Safety Recommendations
Leave undisturbed when outdoors. If found in an unwanted indoor location, gently guide the spider into a cup using a piece of paper and release it safely outdoors.
Habitat & Behavior
Habitat & Range
Found commonly across North America, particularly in eastern and central regions. Prefers gardens, woodland edges, meadows, and human-made structures such as porches, exterior walls, and around outdoor lighting where insect prey gathers.
Behavior & Temperament
Nocturnal web-builders that often sit inverted at the center of the orb web during the night, retreating to nearby crevices or foliage during the day. They are docile and non-aggressive toward humans, only biting if trapped firmly against the skin.
Diet & Prey
Primarily feeds on flying nocturnal insects such as moths, beetles, mosquitoes, flies, and midges captured in its sticky orb web.
Seasonal Activity
Peak activity occurs during late summer and autumn when individuals reach adult size and construct prominent webs near human dwellings.
Description
The Hentz Orb-Weaver is a familiar and beneficial nocturnal architect often discovered glowing in the beam of a porch light. With its robust, patterned abdomen and intricate wheel-shaped web, it serves as an expert aerial hunter, gracefully managing local insect populations around homes and gardens.
Key Features
Stout, patterned brown abdomen with mottled markings, robust spiny banded legs, large vertical orb web usually built near artificial lights, and nocturnal habits.
Similar Species
Spotted Orbweaver (Neoscona domiciliorum) and Barn Spider (Araneus cavaticus). Distinguished by specific abdominal markings and subtle coloration variations, though their ecological roles and harmless nature are very similar.
Life Cycle
Mating occurs in autumn, after which females deposit eggs into a protective silk egg sac attached to bark, walls, or vegetation. Spiderlings hatch in spring, disperse via ballooning, and mature by late summer or autumn.
Ecological Importance
Acts as a primary natural controller of flying insect populations, helping regulate mosquitoes, moths, and agricultural pests while serving as prey for birds and beneficial wasps.
Conservation Status
Not evaluated by the IUCN, but populations are secure, widespread, and abundant throughout their natural range.
Interesting Facts
Many orb-weavers consume and recycle their own webs nightly to recover proteins and amino acids used in spinning the silk. They can construct an entirely new web in less than an hour.
Photography Tips
Use a macro lens with a ring flash or external light source at night when the spider is active in the web. Capture dorsal shots from a slight angle to highlight abdominal patterns and leg banding.
Identified: 2026-08-05T06:50:12.011499