White-banded Fishing Spider
Dolomedes albineus
Family Pisauridae (Nursery Web Spiders), Order Araneae
Physical Description
A large, robust spider with a flattened body profile adapted for hugging surfaces. The cephalothorax is broad and the abdomen is elongated and tapered. The entire body is covered in fine, dense hairs which aid in water repellency and provides a mossy or lichen-like texture.
Size Estimate
Body length of 15-23mm for females, males being smaller. Including its long legs, the total span can reach 75-100mm (3-4 inches).
Coloration & Markings
Characterized by a complex pattern of white, grey, and mossy green or brown. It features a distinct white 'V' or 'M' shaped mark on the cephalothorax and several pairs of pale spots along the abdomen. The legs are heavily banded with dark and light grey/white patches.
Web Type
The White-banded Fishing Spider does not spin a web to catch prey. Instead, it is an active ambush hunter. It only spins silk for draglines, egg sacs, and 'nursery webs' to protect its young after they hatch.
Eye Arrangement
Organized in two rows. The posterior row of four eyes is strongly recurved (curving backward), with the outer eyes being particularly large and prominent, providing excellent vision for detecting movement.
Leg Characteristics
Long, thick, and powerful legs positioned out to the sides for stability. They are covered in sensitive hairs and long spines. In the photo, the legs show a characteristic 'fuzzy' appearance from dense setae and sharp, dark banding.
Venom & Safety Information
Venom Information
Possesses a complex venom designed to immobilize arthropod prey. It contains neurotoxins but is not considered significantly potent to humans.
Medical Significance
Not medically significant. The bite is often compared to a bee sting, causing localized pain, swelling, and redness. Symptoms typically subside quickly. Medical attention is only necessary in cases of rare allergic reactions.
Safety Recommendations
If found indoors, it can be safely caught in a large cup and moved outside. They are not dangerous and will not seek to bite unless pinned against the skin. Wearing gloves while gardening or handling woodpiles is a standard precaution.
Habitat & Behavior
Habitat & Range
Common throughout the Eastern and Southeastern United States. Unlike many other Fishing Spiders, this species is frequently found on tree trunks (especially those with lichen) or man-made structures like fences and houses, as well as near water.
Behavior & Temperament
A sit-and-wait predator that relies on camouflage to remain invisible to prey. It is capable of running very quickly over water or land. While fast, it is generally shy and non-aggressive, preferring to flee rather than bite when disturbed.
Diet & Prey
A generalist predator. It feeds on various insects like moths, crickets, and flies. Larger individuals near water may occasionally take small aquatic vertebrates such as tiny fish or tadpoles.
Seasonal Activity
Most visible during late spring and summer months when adults reach their full size and mating occurs. They overwinter as juveniles in leaf litter or under bark.
Description
Standing out against the mesh of a window screen, the White-banded Fishing Spider is a master of disguise. Its grizzled, lichen-like appearance makes it nearly invisible on a tree trunk. This is an impressive, large spider that acts as a valuable free pest control agent for homeowners, patrolling vertical surfaces for invading insects.
Key Features
Large size, mossy grey/white coloration, heavily banded legs, and the white band across the 'face' (clypeus) just below the eyes.
Similar Species
Often confused with Wolf Spiders (Lycosidae) due to size, but Wolf Spiders have a different eye arrangement (two very large eyes on top). It also resembles the Dark Fishing Spider (Dolomedes tenebrosus) but is much paler and 'whiter'.
Life Cycle
Females carry their large, spherical egg sacs in their chelicerae until the spiderlings are ready to emerge. At that point, the female builds a silk 'nursery' in foliage. They generally live for about a year, maturing in summer.
Ecological Importance
Serves as a vital predator in both terrestrial and semi-aquatic food webs. By consuming large numbers of insects, they help regulate populations of agricultural and household pests.
Conservation Status
Not evaluated by the IUCN, but considered common and stable throughout its native range with no major threats.
Interesting Facts
Despite being 'fishing spiders', this specific species is more arboreal than its relatives and is frequently found high up in trees or on the sides of houses far from large bodies of water.
Photography Tips
A side-profile shot or a direct top-down view is best for identifying markings. Use a macro lens to capture the unique eye arrangement and the intricate, hair-like textures of its camouflage.
Identified: 2026-06-21T23:17:07.796811