Trees provide one of the richest habitats for spiders on earth, offering bark crevices, leaf canopies, hollow trunks, and an abundance of insect prey. Different species exploit different layers — some live under loose bark at the trunk, others build webs high in the canopy, and still others hunt actively across leaves and branches. This vertical diversity means a single large tree can host dozens of spider species simultaneously without much competition.
Web-building tree spiders like orb-weavers and lace weavers take advantage of the natural frames that branches provide, stringing their webs to intercept flying and crawling insects. Many time their web construction carefully, building at night and retreating to hidden spots by day to avoid predators. Some, like the golden silk orb-weaver, produce webs so strong that small birds and bats occasionally become trapped in them.
Hunters and ambushers make up the other major group of tree-dwelling spiders. Huntsman spiders, jumping spiders, and crab spiders roam bark and foliage actively, relying on speed, vision, or camouflage rather than silk traps. Many of these species have evolved remarkable disguises — flattened bodies that blend into bark, green coloring that matches leaves, or patterns that mimic lichen — making them virtually invisible even in plain sight.
Trees also serve as nurseries, with many species constructing egg sacs tucked safely under bark or inside rolled leaves. Spiders are among the most important predators in forest ecosystems, keeping insect and arthropod populations in balance. Despite their fearsome reputation, the overwhelming majority of tree-dwelling spiders are completely harmless to humans and far more likely to flee at the first sign of disturbance than to bite.
Spiders that Live In Trees
Orb-Weaver Spiders (Araneidae)
Among the most recognizable tree spiders, orb-weavers spin the classic circular webs strung between branches and trunks. Genera like Araneus and Neoscona are common across North America, Europe, and Asia. They position their webs to intercept flying insects and typically rest at the web’s center or hide in a curled leaf nearby.
Crab Spiders (Thomisidae)
These ambush hunters don’t spin webs at all. They flatten themselves against tree bark or flowers, relying on camouflage to match their surroundings perfectly. Species like Misumena vatia can even slowly change color between white and yellow to blend in with whatever surface they occupy.
Jumping Spiders (Salticidae)
With their exceptional eyesight and curious, alert personalities, jumping spiders are active daytime hunters on tree trunks and branches. Species like Phidippus regius in North America and Hyllus in Africa stalk and pounce on prey rather than using webs, using silk only as a safety dragline.
Bark Spiders (Caerostris darwini)
Found in Madagascar, Darwin’s bark spider is remarkable for spinning the largest known orb webs in the world — some stretching over 2.8 meters across rivers and streams anchored to surrounding trees. Their silk is also considered the toughest biological material ever recorded, twice as strong as any other known spider silk.
Spitting Spiders (Scytodes)
These slow-moving spiders inhabit tree bark and woody vegetation in tropical and subtropical regions. Rather than chasing prey, they spit a venomous, sticky silk at insects from a distance, immobilizing them instantly. They are entirely harmless to humans and are fascinating to observe up close.
Huntsman Spiders (Sparassidae)
Large, flat-bodied, and fast, huntsman spiders are built perfectly for life under loose bark. Widespread across Australia, Asia, and Africa, species like Heteropoda venatoria squeeze into tight crevices in tree trunks during the day and emerge at night to hunt. Their leg span can exceed 15 cm in some tropical species.
Green Lynx Spider (Peucetia viridans)
Brilliantly colored to match leafy vegetation, the green lynx spider is a common sight on shrubs and tree foliage across the southern United States and Central America. It is an active hunter that leaps onto prey and is also known for aggressively guarding its egg sac, sometimes spitting venom at perceived threats near the nest.
Long-Jawed Orb-Weavers (Tetragnatha)
These slender, elongated spiders are specialists of streamside and forest-edge trees, spinning horizontal webs in low branches over water. Their extraordinarily long chelicerae (jaws) give them a distinctive look. When threatened, they stretch out along a twig, making themselves nearly invisible.
Lichen Huntsman (Pandercetes gracilis)
Native to the rainforests of Australia and Southeast Asia, the lichen huntsman is a master of disguise. Its body is patterned to look exactly like the lichen and moss covering the tree bark it rests on. It presses itself flat against surfaces during the day, becoming virtually impossible to spot even at close range.
Tube Web Spider (Segestria florentina)
One of Europe’s largest spiders, this species lives in silken tubes tucked into crevices in tree bark and old walls. Trip lines radiate outward from the tube entrance; when an insect touches one, the spider rushes out with remarkable speed to grab it. It has an iridescent green sheen on its fangs and can deliver a painful bite if handled.
Daddy Long-Legs Spider (Pholcus phalangioides)
Though most associated with houses, pholcid spiders also inhabit hollow trees and woody cavities in warmer climates. They spin loose, irregular webs and vibrate rapidly when disturbed — a behavior thought to make them appear larger and blur their outline to predators. Despite persistent myths, their venom is not potently dangerous to humans.
Golden Silk Orb-Weaver (Trichonephila clavipes)
Found from the southeastern United States through Central and South America, this striking spider strings its large, golden-tinted webs between trees in forests and forest edges. The distinctive yellow silk is not just beautiful — it is extraordinarily strong, reportedly tougher than Kevlar by weight. Females are much larger than males and can reach 40 mm in body length.
Spiny Orb-Weaver (Gasteracantha cancriformis)
One of the most visually striking tree spiders, the spiny orb-weaver is found across the Americas, Africa, and Asia. Its hard, crab-like abdomen is adorned with prominent spines that likely deter predators. They build small but precise orb webs between tree branches, often decorated with tufts of silk that may serve to warn birds away from flying through and destroying the web.
Triangle Weaver (Hyptiotes cavatus)
This unusual spider builds only a triangular section of an orb web rather than a complete circle, anchoring it between tree branches in North American woodlands. It holds a signal thread in its front legs and when prey strikes the web, it rapidly pulls and releases the web repeatedly to entangle the insect further. This active web-manipulation is rare among spiders and makes it one of the most behaviorally interesting tree species.
Arboreal Tarantulas (Poecilotheria spp.)
Unlike their ground-dwelling relatives, Poecilotheria tarantulas from India and Sri Lanka are dedicated tree dwellers, living in hollows and crevices of large forest trees. They are strikingly patterned in grey, yellow, and black, and are fast-moving for tarantulas. Their venom, while not lethal, can cause significant muscle cramps and discomfort, and wild populations are unfortunately threatened by deforestation.
Sac Spiders (Clubiona spp.)
Named for the silken sac retreats they construct under bark and between rolled leaves, sac spiders are widespread across temperate forests in Europe, North America, and Asia. They are nocturnal hunters that roam tree surfaces at night feeding on small insects. Though small and often overlooked, they are among the most abundant spiders in woodland ecosystems and play a significant role in forest insect control.
Walnut Orb-Weaver (Nuctenea umbratica)
A secretive nocturnal spider found across Europe and parts of Asia, the walnut orb-weaver hides in tight crevices beneath bark during the day and constructs its web on tree trunks and fences at night. Its flattened body is perfectly adapted for squeezing into narrow gaps. The spider has a distinctive dark brown, wrinkled abdomen that resembles a walnut kernel — excellent camouflage against rough bark.
Wrap-Around Spider (Dolophones turrigera)
Native to Australia, this species has one of the most extraordinary camouflage strategies of any spider. Its concave underside allows it to wrap itself completely around a tree branch, becoming almost indistinguishable from the bark. During the day it rests motionless in this position, and at night it builds an orb web among the branches. It is entirely harmless and a wonderful example of evolutionary adaptation to arboreal life.
Two-Tailed Spider (Hersilia spp.)
Found across Africa, Asia, and Australia, two-tailed spiders are slender, bark-colored spiders with two distinctive elongated spinnerets that give them their name. They live almost exclusively on tree trunks, running in rapid circles around the trunk when disturbed to stay on the opposite side from a predator. They lay silk lines directly on the bark surface and wait motionless for insects to wander into their trap.
Pirate Spiders (Mimetus spp.)
These cunning spiders inhabit trees and shrubs across North America and Europe and have developed a remarkable hunting strategy — they invade other spiders’ webs and mimic the vibrations of trapped prey or a potential mate to lure the resident spider close before attacking it. They are specialist spider-eaters, known as arachnophages, and rarely bother with insects at all. Their role in regulating spider populations in woodland canopies makes them ecologically significant.
Feather-Legged Lace Weaver (Uloborus plumipes)
This delicate spider is native to tropical Africa but has spread widely through greenhouse trade and is now found across Europe and parts of Asia on ornamental trees and shrubs. Unlike the vast majority of spiders, it produces no venom at all, relying entirely on wrapping prey tightly in silk to subdue it. It builds a horizontal orb web with a distinctive fuzzy, hackled band of silk through the center, and is completely harmless to humans and animals.