Black spiders are found on every continent except Antarctica, inhabiting environments as diverse as tropical rainforests, temperate woodlands, desert canyons, coastal dunes, and the dark corners of human homes. The color black serves many purposes in the spider world — camouflage in dark crevices, heat absorption in cool climates, warning coloration for venomous species, and dramatic contrast in courtship displays. Some of the most feared, most fascinating, and most ecologically important spiders in the world are black. The 40 species and groups below represent the remarkable breadth of black spiders found across the globe.
List of Black Spiders – Identification
Black Widow
The black widow is the most iconic and widely recognized black spider in the world, known above all for the brilliant red hourglass marking on the underside of the female’s glossy, jet-black, globular abdomen. Found throughout North America, the female is significantly larger than the male and constructs a strong, irregular cobweb in dark, sheltered spots — woodpiles, outbuildings, rock piles, and undisturbed corners. Her venom is a potent neurotoxin, though bites are rarely fatal to healthy adults and she is not aggressive. The male is much smaller, often with spotted markings, and is occasionally consumed by the female after mating.
Southern Black Widow
The Southern black widow is the most common and widespread black widow species in the United States, found throughout the Southeast and into the Midwest and Southwest. She is distinguished by the classic, unbroken red hourglass on the underside of her shiny, spherical, blue-black abdomen. She builds her messy, sticky, funnel-based cobweb low to the ground in dark, dry, undisturbed locations — beneath logs, stones, in outhouses, and in the corners of garages and barns. Immature females may display red spots on the top of the abdomen that disappear as they mature into their final, uniformly black adult coloring.
Northern Black Widow
The Northern black widow occupies the northern and eastern portions of the black widow’s range, from southern Canada through New England and the Mid-Atlantic states. It is distinguished from the Southern black widow by a row of red spots running down the center of the top of the abdomen and two triangular red marks on the underside that may form a broken rather than complete hourglass. It is slightly less glossy in appearance than its southern relative and tends to inhabit more forested habitats — preferring hollow stumps, root masses, and woody debris in woodland edges rather than the human structures favored by Southern black widows.
Western Black Widow
The Western black widow is the dominant black widow species of the American West, found from British Columbia south to Mexico and east to the Great Plains. The female is a glossy, jet-black spider with the characteristic red hourglass on the underside of her round abdomen, sometimes with an additional red spot above. She is common in desert and semi-arid habitats, building her web in cacti, rock crevices, rodent burrows, and dry, sheltered debris. Of the three North American black widow species, the Western black widow is considered to have the most potent venom, though serious bites remain uncommon.
False Black Widow
The false black widow is a widespread, dark-brown to purplish-black cobweb spider that closely resembles the true black widow in size and general body form but lacks the distinctive red hourglass marking and is considered significantly less dangerous. Found across Europe, North Africa, western Asia, and now established in North and South America, it is a common indoor spider, often found in the upper corners of rooms, garages, and garden sheds. The female has a smooth, rounded abdomen with faint cream or reddish mottled patterning. While its venom can occasionally cause localized pain and swelling, serious medical complications are rare.
Black House Spider
The black house spider is one of the most commonly encountered spiders in and around homes across Australia and New Zealand, forming distinctive funnel-shaped webs in window frames, wall crevices, eaves, and bark. The female is dark charcoal to black with a velvety texture and a distinctive lacy, cream-colored pattern on the top of her abdomen. She maintains her web persistently for years, continually repairing it rather than rebuilding. While her bite can cause localized pain, nausea, and sweating in some cases, it is not considered medically serious for most healthy adults. She is shy and rarely bites unless trapped against skin.
Black Jumping Spider
Black jumping spiders are small, compact, velvety-black jumping spiders found across North America, Europe, and Asia, identified by their characteristic stocky build, short legs, and enormous, forward-facing principal eyes that give them an alert, curious expression. The Daring jumping spider — one of the most common species — is jet-black with white spots or bands on the abdomen and iridescent blue-green chelicerae that flash brilliantly during courtship. Jumping spiders have exceptional, near-human-quality vision and stalk their prey with deliberate, cat-like precision before launching an explosive, accurate leap. They are completely harmless to people and are often quite bold and inquisitive around humans.
Black Tarantula
Several tarantula species are strikingly and uniformly black, including the famous Mexican black tarantula — one of the most sought-after species in the exotic pet trade for its docile temperament and spectacular, velvety, jet-black coloring on both body and legs. Found in the dry forests of Colima, Mexico, it is a slow-moving, long-lived burrowing tarantula that rarely shows aggression. The Black Asian forest tarantula and various African species are also deeply black. Black tarantulas in general are among the most visually dramatic of all spiders, and their large, glossy, uniformly dark bodies make them immediately striking in any collection or wild encounter.
Trapdoor Spider (Black)
Black trapdoor spiders are robust, glossy, deeply dark brown to jet-black spiders found across Australia, parts of Asia, Africa, and the Americas, named for their remarkable engineering — they construct silk-lined burrows topped with a precisely fitted, hinged trapdoor camouflaged with soil and debris. The spider waits inside with its legs braced against the door and silk trip-lines extending outward. When prey disturbs a line, the trapdoor flies open and the spider strikes in a fraction of a second. The shiny, hairless cephalothorax and stout legs of many black trapdoor species give them a particularly sleek, armor-like appearance.
Black Purseweb Spider
The black purseweb spider is a fascinating and rarely seen spider of eastern North America and Europe, related to tarantulas, that spends virtually its entire life sealed inside a long, silken tube — the “purseweb” — attached to the base of a tree or rock. When an insect walks over the tube, the spider stabs upward through the silk with its enormous, forward-directed fangs, drags the prey inside, and repairs the puncture. The female is jet-black, smooth, and glossy. Males are rarely seen above ground except during the brief mating season. It is one of the most reclusive and least-understood spiders in North America.
Black Wishbone Spider
Black wishbone spiders are burrowing, trapdoor-related spiders from Australia that construct Y-shaped or wishbone-shaped burrows in the soil, each branch capped with a thin, papery trapdoor. The spider waits at the junction of the wishbone, dashing out through whichever branch is closest to approaching prey. They are stocky, dark brown to black spiders with smooth, glossy bodies. Wishbone spiders are nocturnal and rarely seen above ground, but their distinctive double-entrance burrow systems are occasionally discovered in gardens, parks, and open woodland throughout eastern and southern Australia.
Black Funnelweb Spider (Sydney)
The Sydney funnelweb spider is widely regarded as the most dangerous spider in the world, responsible for a number of human fatalities before the development of antivenom in 1980. The female is dark brown to glossy black, and the male — more dangerous to humans because his venom contains an additional toxic compound — is slightly smaller and equally dark. Both sexes build silk-lined funnel retreats in cool, moist, sheltered spots in gardens and bushland around Sydney, Australia. The male wanders in search of females during summer and autumn and may enter homes. The development of effective antivenom has rendered bites survivable when treated promptly.
Black Funnelweb Spider (Northern Tree)
The Northern tree funnelweb spider is one of the largest funnelweb species, found in Queensland’s rainforests and coastal forests, and is remarkable for being an arboreal species — it constructs its silken retreat in tree hollows, bark crevices, and the epiphytic ferns of rainforest trees rather than in the ground. It is very large, with a glossy, deep black to brownish-black body, and is considered medically significant, though antivenom is effective against its venom. Its arboreal habit makes encounters more likely during storm events that bring fallen branches and debris into human environments.
Black Widow Redback
The redback spider of Australia is closely related to the black widow and functionally equivalent — a small, glossy-black female with a distinctive, vivid red or orange stripe running along the top of the abdomen, rather than the underside as in North American black widows. She builds a sticky, messy, three-dimensional web in sheltered spots — under garden furniture, in flowerpots, beneath outdoor toilet seats, and in dry debris. Her venom is neurotoxic and can cause severe pain, sweating, nausea, and muscle weakness, though deaths are extremely rare since the development of antivenom. She is considered the most medically significant spider in Australia.
Spitting Spider (Black)
Spitting spiders are remarkable hunters that do not use a web to capture prey but instead spit a zigzag stream of venomous, sticky silk at their target from a distance of up to an inch, pinning the victim to the surface before it can escape. Several species are dark gray to near-black with pale mottling. The spitting action is so rapid it is invisible to the naked eye, completed in approximately 1/700th of a second. They are found worldwide and are common indoor spiders in temperate and tropical regions, where they are entirely harmless to people and actually provide a valuable service by controlling other insects and spiders.
Black Orb Weaver
Several orb weaver species are predominantly black, constructing large, classic, circular webs in gardens, meadows, and woodland edges. The garden spider and its close relatives in parts of Asia and Africa include forms with striking black abdomens marked with yellow, white, or silver. Black orb weavers tend to be most active from late summer through autumn, and the females — much larger than the males — sit at the hub of their large, precision-engineered webs, often with a distinctive zigzag band of thick silk called a stabilimentum woven across the center. They are entirely harmless, beneficial predators of insects.
Black Crab Spider
Black crab spiders are ambush hunters that adopt a wide, flattened stance with their front legs held wide — ready to grab passing prey — and move sideways with a crab-like gait. While most crab spiders are pale or white to match flowers, several species are jet-black or very dark, adapted to ambush prey on dark bark, black soil, or shadowy rock surfaces. They do not build a web to catch prey but rely entirely on stillness and camouflage. Found worldwide, black crab spiders are most often encountered on dark tree trunks, fences, and rocky surfaces in woodland and scrubland habitats.
Black Cellar Spider
Black cellar spiders are long-legged, delicate-bodied spiders found in the dark, humid corners of cellars, basements, caves, and the undersides of rocks and logs across much of the world. Some species are dark brown to near-black in coloring. They build loose, irregular webs and are famous for their unusual defensive behavior when disturbed — vibrating their bodies so rapidly in the web that they become a blur and virtually invisible. Despite widespread myths claiming they possess the world’s most potent venom but fangs too short to bite humans, this is entirely false — their venom is weak and their fangs can pierce human skin, but they pose no medical threat.
Black Ground Spider
Ground spiders are a large family of fast-moving, nocturnal hunters that live beneath stones, bark, and leaf litter across the world, and many species are uniformly dark brown to jet-black with a smooth, shiny cephalothorax. They do not use a web to catch prey but hunt actively at night, running down insects with speed and agility. During the day they rest in small, silken retreats beneath rocks and debris. Black ground spiders are among the most commonly encountered spiders when lifting rocks and logs in gardens and wild areas across Europe, North America, Asia, and Australia, though they are harmless and rarely noticed.
Black Running Crab Spider
Black running crab spiders are flat-bodied, fast-moving hunters from the family Philodromidae that hunt on bark, rock surfaces, and low vegetation, relying on speed and excellent vision rather than a web. Several species are dark brown to glossy black, providing effective camouflage on bark and dark surfaces. They have a somewhat elongated body form compared to true crab spiders and are noticeably fast runners, capable of darting rapidly across surfaces when disturbed. They are entirely harmless, beneficial predators found across Europe, North America, and Asia.
Ant-Mimicking Spider (Black)
Several spider species have evolved to closely mimic black ants — an effective defense strategy, as ants are avoided by many predators due to their formic acid, painful bites, and aggressive defense. These spiders adopt the ant’s body posture by holding their front legs up to mimic antennae, walking in the hesitant, jerking manner of ants, and often having a narrowed waist to simulate the ant’s three-part body. Myrmarachne and related genera include many black species that are convincing ant mimics. Found in tropical and subtropical regions worldwide, they are among the most behaviorally sophisticated and fascinating of all spiders.
Black Lynx Spider
Black lynx spiders are slender, long-legged, agile hunting spiders that stalk prey on plants and low vegetation, pouncing with a cat-like leap rather than using a web. While most lynx spiders are green or tan, several tropical and subtropical species are dark brown to black, providing camouflage on bark and dark leaf surfaces. They are identified by their distinctive, prominently spined legs arranged in rows, their upright, alert posture, and the way they grip vegetation with the tips of their legs while scanning for prey. Found across tropical Africa, Asia, Australia, and the Americas, they are harmless and effective insect predators.
Black Flatrock Spider
Flatrock spiders are remarkable spiders adapted to living on exposed rock outcrops, where they must hide in the thinnest possible crevices to avoid predators and extreme temperatures. They have evolved an extraordinarily flattened body — like a spider that has been pressed in a book — allowing them to squeeze into hair-thin rock splits. Many species in South Africa and Australia are jet-black, absorbing heat on cold mornings and blending with dark rock surfaces. They run with surprising speed across rock faces and hide beneath lichen or in cracks when approached. Some South African species show remarkable social behavior.
Black Velvet Spider
Black velvet spiders from southern Africa are small, matte-black, softly textured spiders that live communally in large, shared silk retreats in dry, thorny scrubland — some colonies housing hundreds of individuals. The soft, velvety, non-reflective black surface of their bodies gives them their common name and provides excellent camouflage against dark bark and soil. These social spiders cooperate to capture prey far larger than any individual could manage, sharing the captured food communally. Social spider colonies in Africa represent some of the most complex cooperative behavior found in any spider species and are intensively studied by behavioral ecologists.
Black Recluse
The desert recluse and several related recluse spiders of the American Southwest and Mexico have coloring that ranges from pale tan to dark brown and near-black, particularly the darker variants found in cooler, higher-elevation habitats. Like all recluse spiders, they are identified by six eyes arranged in three pairs rather than the standard eight eyes of most spiders, and by the characteristic violin or fiddle-shaped marking on the cephalothorax. They are shy, nocturnal hunters of dark, dry, undisturbed habitats — rock crevices, abandoned burrows, and dry leaf litter — and are medically significant due to their necrotic, tissue-destroying venom.
Black Mouse Spider
Mouse spiders are large, robust Australian spiders closely related to trapdoor spiders and funnelweb spiders, living in burrows sealed with a hinged trapdoor. The male eastern mouse spider is one of the most dramatically colored spiders in Australia — jet-black body with a vivid, glossy, bright red head and chelicerae — while females are uniformly dark brown to black. Despite their fearsome appearance, mouse spiders are generally less aggressive than funnelweb spiders and produce a venom that is treatable with funnelweb antivenom. Males wander during the day in search of females, making encounters in gardens and homes relatively common in eastern Australia.
Black Wishbone Spider (Missulena)
A second, distinct group of wishbone spiders in the genus Missulena includes the mouse spiders of Australia, which construct Y-shaped burrows with hinged trapdoors at each entrance. The female is a stocky, uniformly dark brown to black spider, while the striking male has a bright red head section contrasting with a blue-black abdomen. These are burrowing, ambush predators that rarely venture far from their burrows unless flooding forces them to the surface or males are wandering in search of mates. They are considered medically significant, and funnelweb antivenom is recommended for serious bites.
Black Wolf Spider
Wolf spiders are a massive, globally distributed family of ground-hunting spiders, and many species are dark brown to nearly black with subtle, darker mottled or striped patterning. Black or very dark wolf spiders are most common in cool, moist, shaded habitats where dark coloring provides camouflage and helps absorb warmth. They are identified by their eye arrangement — four small front eyes, two large middle eyes, and two large side eyes — and by their distinctive habit of carrying their egg sac attached to the spinnerets and, after hatching, carrying the spiderlings on their backs. They are fast, agile hunters that chase down prey on foot.
Black Sheet Web Spider
Sheet web spiders construct horizontal, flat, trampoline-like webs of fine silk stretched across grass, low shrubs, and leaf litter, with vertical trip-threads above that knock flying insects down onto the sheet, where the spider lurks beneath. Many species are dark brown to near-black, particularly those that inhabit forest floors and deep shade where dark coloring provides camouflage. The labyrinth spider, a European sheet web spider, builds an elaborate, domed sheet web in tall grass. Sheet web spiders are found worldwide and are among the most ecologically important spider groups, capturing vast numbers of flying insects across grassland and woodland habitats.
Black Sac Spider
Black sac spiders — named for the small, silk tube or “sac” they construct as a daytime retreat in rolled leaves, under bark, or along the corners of walls and ceilings — include several species with dark brown to near-black coloring. They are fast-moving, nocturnal hunters that leave their sac at night to actively hunt insects on plant surfaces and walls. They are notable in North America and Europe as a frequent cause of spider bites, as they often enter homes and may bite when trapped against skin while a person sleeps. The bite can cause localized pain and irritation but is rarely medically serious.
Black Daddy Long-Legs Spider
While most daddy long-legs spiders are pale brown to tan, several species found in dark, humid environments — caves, cellars, and deep forest floors — develop considerably darker, near-black coloring. These long-legged, small-bodied spiders build loose, three-dimensional webs in sheltered, humid spots and are remarkably effective predators despite their delicate appearance, capable of capturing and immobilizing much larger spiders — including black widows — by throwing silk over them from a safe distance. The dark forms are most commonly encountered in cave systems, deep cellars, and heavily shaded, permanently moist environments where little light penetrates.
Black Hacklemesh Weaver
Hacklemesh weavers are medium-sized, dark brown to blackish spiders that construct a distinctive, layered web system — a flat sheet web below combined with a tangle of threads above and a tubular retreat at the back — in rock crevices, among debris, and beneath bark and logs. They are common in homes and gardens across North America and Europe, where their messy, irregular webs are frequently found in undisturbed corners of basements and outbuildings. The female is typically dark, robust, and secretive, spending most of her time in the tubular silk retreat and rushing out to subdue prey that falls onto the sheet portion of her web.
Black European Garden Spider (Melanistic)
The European garden spider is most familiar in its typical form — a large orb weaver with a white cross pattern on its brown abdomen — but fully melanistic (all-black) individuals occur occasionally in wild populations, particularly in cooler, northern parts of the range where dark coloring provides thermal advantage. Melanistic European garden spiders are entirely black or very dark brown and build the same large, classic, geometrically perfect circular webs as their more typical relatives. They are completely harmless, and their striking all-black appearance makes them an unusual and memorable find in the garden.
Black Cobweb Spider
Cobweb spiders of the family Theridiidae include many dark to near-black species beyond the famous black widows. These small, round-abdomened spiders build irregular, three-dimensional tangle webs in sheltered spots and are found in vast numbers in gardens, hedgerows, and buildings worldwide. Many dark cobweb spiders are minute and overlooked, but they are ecologically significant — collectively trapping and consuming enormous numbers of small insects, mites, and other invertebrates. The Achaearanea and Parasteatoda genera include numerous small, blackish cobweb spiders commonly found indoors and in garden vegetation across the temperate world.
Black Grass Spider
Grass spiders are fast-moving, sheet-web-building spiders of the genus Agelenopsis, common throughout North America in lawns, meadows, and low vegetation. Several species are dark brown to near-black with two dark stripes along the top of the cephalothorax. They build flat, horizontal sheet webs with a funnel-shaped retreat at one end and rush from the funnel to grab prey that lands on or walks across the sheet. They are among the most abundant spiders in North American grassland habitats and reach peak population densities in late summer and autumn, when their dew-covered, funnel-shaped webs are particularly visible in the early morning light.
Black Widow (Button Spider — African)
The button spiders of southern Africa are the Old World ecological equivalents of North American black widows, closely related and similarly equipped with potent neurotoxic venom and the characteristic round, glossy abdomen. The black button spider is the most medically significant species, a glossy black female with three rows of red, orange, or yellow spots on the top of the abdomen and a red or yellow hourglass-like marking below. She builds her distinctive, sticky, ground-level web in dry, sheltered spots across the bushveld of southern Africa and is a significant cause of spider envenomation in rural South Africa.
Black Pirate Spider
Pirate spiders are remarkable specialist predators that prey almost exclusively on other spiders, invading the webs of other species, plucking the threads to mimic the vibrations of trapped prey, and then attacking and consuming the resident spider. Several species are dark brown to near-black in coloring, aiding their concealment as they approach other spiders’ webs. They are found across North America, Europe, and Asia and are entirely harmless to humans. Their specialized, spidery diet makes them fascinating subjects for behavioral study, and they are considered among the most sophisticated predatory strategists in the spider world.
Black Wishbone Tarantula
Several tarantula species from Asia and Africa construct burrows with unusual branched or Y-shaped entrances reminiscent of the Australian wishbone spiders, and many of these are dark brown to black in coloring. The Chilobrachys genus of Asian burrowing tarantulas includes several very dark, nearly black species found in the forests of India, Sri Lanka, Thailand, and Vietnam. These are fossorial tarantulas — spending most of their lives underground — with stocky, darkly pigmented bodies and a notably defensive temperament compared to many other tarantula genera. Several species are medically significant due to their readiness to bite and potent venom.
Black Spitting Tarantula
The black spitting tarantula from southern Africa is one of the most unusual tarantulas in the world, possessing the remarkable ability to spit venom at a threat from a distance — an adaptation seen in very few spider species. The female is a medium-sized, stocky, dark brown to black, ground-dwelling tarantula that flicks venom in a rapid, side-to-side spraying motion that can reach several inches. The venom causes intense irritation if it contacts eyes or mucous membranes. It was the first tarantula species confirmed to spit venom defensively, and its discovery overturned the long-held assumption that only the distantly related spitting spider possessed this capability.
Black Curtain Web Spider
Curtain web spiders are large, powerful Australian spiders related to funnelwebs, constructing elaborate, three-dimensional, curtain-like web systems across tree trunks, rock faces, and the entrances to caves and burrows. The silk structure consists of vertical sheets with numerous radiating trip-threads that funnel struggling prey into a central tubular retreat where the spider waits. Several species are dark brown to black and are substantial spiders — females of some species are large and robust. While less medically notorious than the Sydney funnelweb, they are capable of delivering a painful bite and their venom composition warrants caution in their native Queensland habitat.