If you live in Ohio or are simply curious about the local arachnid fauna, this list covers 42 common spiders you might encounter across the state. Whether you’re a nature enthusiast, a homeowner wanting to identify webs around your property, or just interested in learning more about these fascinating creatures, this guide offers detailed descriptions of each species’ appearance, habitat, and behavior.
1. Northern Black Widow (Latrodectus variolus)
The Northern Black Widow is one of Ohio’s most notorious spiders, known for the distinctive red hourglass marking on its shiny black abdomen. Females are about 1.5 inches including leg span and prefer dark, undisturbed areas like woodpiles or basements. Though venomous, bites are rare and usually only serious for children or allergic individuals.
2. Common House Spider (Parasteatoda tepidariorum)
This small, brownish spider is frequently found indoors, spinning messy cobwebs in corners and window frames. It is harmless to humans and feeds on small household pests, making it a beneficial presence. Females are about 5-8 mm long and often carry egg sacs near their webs.
3. Wolf Spider (Family Lycosidae)
Wolf spiders are robust, fast hunters that don’t spin typical webs but chase down prey on the ground. They have excellent eyesight and carry their egg sacs attached to their spinnerets. Several species occur in Ohio, commonly seen in gardens and grassy areas.
4. Orb Weaver (Araneus diadematus)
The European garden spider, an orb weaver, builds large, symmetrical circular webs in shrubs or open spaces. It’s recognized by the white cross-shaped markings on its abdomen. These spiders help control insect populations and are harmless to people.
5. Bold Jumping Spider (Phidippus audax)
Bold jumping spiders are small but striking with iridescent green or blue chelicerae (mouthparts) and bold white spots on a black body. They actively hunt prey by leaping rather than using webs and have excellent vision. They are common on sunny walls and fences.
6. Yellow Garden Spider (Argiope aurantia)
Also called the black and yellow garden spider, this species is famous for its striking yellow and black patterned abdomen and large orb webs with a distinctive zigzag stabilimentum. Females can grow up to 1 inch long. They commonly appear in gardens and fields, preying on flying insects.
7. Brown Recluse (Loxosceles reclusa)
While less common in Ohio, the brown recluse has been occasionally reported in the southern parts of the state. It is identified by a violin-shaped mark on its back and six eyes arranged in pairs. Its bite can cause skin necrosis, but bites are rare and usually defensive.
8. Funnel Weaver Spider (Family Agelenidae)
Funnel weavers build sheet-like webs with a funnel-shaped retreat where the spider hides. They are often seen in grassy areas or corners of buildings. These spiders are fast runners and harmless to humans.
9. Nursery Web Spider (Pisaurina mira)
Nursery web spiders get their name from females carrying egg sacs in their jaws and building protective nursery webs for their spiderlings. They are large, brownish spiders often found near water or vegetation. They hunt actively and do not build webs to catch prey.
10. Green Lynx Spider (Peucetia viridans)
This bright green spider is notable for its excellent camouflage among green plants and flowers. It hunts by ambushing insects rather than spinning webs. Though more common in southern states, occasional sightings occur in southern Ohio.
11. Sheetweb Weaver (Linyphiidae family)
These tiny spiders create horizontal sheet webs often found close to the ground in leaf litter or grass. They are among the most abundant spiders in Ohio, though they go unnoticed due to their small size, typically under 4 mm.
12. Spotted Orb Weaver (Neoscona crucifera)
Recognizable by the cross-shaped pattern on its abdomen, this orb weaver spins large vertical webs and is common in wooded and suburban areas. Its coloration varies from reddish-brown to yellowish, aiding in camouflage among leaves.
13. Long-bodied Cellar Spider (Pholcus phalangioides)
Often called daddy long-legs, this spider has a small body with very long, thin legs. It builds messy webs in dark, damp places like basements and caves. It is harmless and can help control other pest spiders.
14. Six-spotted Fishing Spider (Dolomedes triton)
This large semi-aquatic spider hunts on the surface of water and along shorelines. Its brown and tan patterned body can reach 1.5 inches in leg span. It preys on aquatic insects and even small fish or tadpoles.
15. Black and White Jumping Spider (Salticus scenicus)
Commonly found on sunny walls and fences, this small jumping spider has bold black and white stripes. It is an agile hunter with excellent eyesight and is harmless to humans.
16. Zebra Jumping Spider (Salticus scenicus)
Also called the zebra spider, this small species features a distinctive black and white striped pattern resembling a zebra. It is common on buildings and rocks and feeds on small insects with impressive jumping ability.
17. Triangle Orb Weaver (Araneus trifolium)
Named for the triangular shape on its abdomen, this orb weaver builds large webs in wooded areas and gardens. It varies in color from orange to pale yellow and helps reduce pest insect populations.
18. Cross Orb Weaver (Araneus diadematus)
One of the most common orb weavers, it is easily identified by the white cross marking and builds large wheel-shaped webs. It is widespread throughout Ohio and plays an important role in controlling flying insects.
19. Black House Spider (Badumna insignis)
Though native to Australia, the black house spider has been introduced in some parts of the U.S., including Ohio. It builds messy webs around windows and doorframes. Its bite is mild and rarely causes problems.
20. Crab Spider (Family Thomisidae)
Crab spiders are known for their crab-like sideways movement and ability to change color to match flowers. They are ambush predators, commonly found in gardens and meadows waiting for pollinating insects.
21. Green Orb Weaver (Araniella cucurbitina)
Small and bright green, this orb weaver is often found on shrubs and trees. It spins small orb webs and preys on aphids and other small insects, making it beneficial for gardeners.
22. Spiny Orb Weaver (Gasteracantha cancriformis)
Recognizable by its bright, spiny abdomen, the spiny orb weaver is a striking spider that builds orb webs in open spaces. It is harmless and helps control insect populations.
23. Cave Orb Weaver (Meta ovalis)
This spider is adapted to dark cave environments and creates orb webs near cave entrances. It has pale coloration and long legs to navigate low-light conditions.
24. Hickory Tussock Moth Caterpillar Spider Mimic
Some small spiders mimic the appearance of toxic caterpillars like the hickory tussock moth to avoid predators. These mimic spiders are harmless and use coloration as a defense.
25. Six-eyed Sand Spider (Sicarius spp.)
Rare in Ohio, these desert-dwelling spiders are occasionally misidentified here. They have flattened bodies and six eyes arranged in three pairs. They are not native and extremely rare in the state.
26. Woodlouse Hunter (Dysdera crocata)
This reddish spider specializes in hunting woodlice and has large, powerful chelicerae (fangs). It is nocturnal and often found under logs or stones.
27. Prowling Spider (Family Miturgidae)
Prowling spiders are free-roaming hunters that do not build webs. They are medium-sized and nocturnal, often found under bark or leaf litter.
28. Jumping Spider (Family Salticidae)
This family includes many species with excellent vision and jumping ability. They are diurnal hunters and often display bright colors or iridescence. Jumping spiders are harmless and curious around humans.
29. Cellar Spider (Family Pholcidae)
Common in Ohio homes, cellar spiders build tangled webs in basements and garages. They have long legs and small bodies and help control other spider populations by preying on them.
30. Mouse Spider (Scotophaeus blackwalli)
Named for its mouse-like color and shape, this ground-dwelling spider is a fast runner and nocturnal hunter. It is harmless and often found under rocks or debris.
31. Ant-mimicking Spider (Myrmarachne spp.)
These jumping spiders mimic ants in appearance and behavior to avoid predators. They have narrow waists and move in jerky motions similar to ants.
32. Black Widow Spider (Latrodectus mactans)
Similar to the Northern Black Widow but less common in Ohio, this dangerous spider is identifiable by its shiny black body and red hourglass. It prefers warm, sheltered locations outdoors.
33. False Black Widow (Steatoda grossa)
Often mistaken for black widows, false black widows have dark brown to black bodies with a rounder abdomen. They build tangled webs and their bite is mild compared to true black widows.
34. Grass Spider (Agelenopsis spp.)
Grass spiders build funnel webs in tall grass and shrubs. They are fast runners and primarily nocturnal hunters. Their webs often have a sheet-like surface leading to a retreat funnel.
35. Orchard Spider (Leucauge venusta)
Known for its metallic green and silver body with long legs, this orb weaver builds webs in trees and shrubs, often in orchards. It is harmless and helps control flying insect pests.
36. Spotted Wolf Spider (Rabidosa rabida)
Distinguished by its reddish-brown coloration and spots, this wolf spider is a ground hunter common in open fields and forests. It carries its egg sac attached to its spinnerets.
37. Marbled Orb Weaver (Araneus marmoreus)
This brightly colored orb weaver has a marbled orange and yellow abdomen with black markings. It is common in fall and spins large webs in gardens and wooded areas.
38. Brown Widow (Latrodectus geometricus)
Less common in Ohio, the brown widow has a tan to brown body with an orange hourglass marking. It prefers warmer climates but has been spotted in southern Ohio.
39. Six-spotted Fishing Spider (Dolomedes scriptus)
Similar to Dolomedes triton, this species hunts near water and can walk on water surfaces. It has distinctive six spots on its abdomen and preys on aquatic insects.
40. Triangulate Cobweb Spider (Steatoda triangulosa)
This small cobweb spider is dark brown with a triangular pattern on its abdomen. It builds small tangled webs indoors and outdoors and is harmless.
41. Orchard Orb Weaver (Leucauge venusta)
With a metallic green body and silver markings, this orb weaver prefers orchards and wooded areas. It spins horizontal orb webs and is beneficial for pest control.
42. Six-eyed Crab Spider (Sicarius hahni)
Rare and mostly found in desert regions, this spider is occasionally misreported in Ohio. It has a flattened body and six eyes. It is not considered a threat in Ohio due to rarity.
How to Choose
When identifying or learning about Ohio spiders, focus on key features such as size, color patterns, web type, and habitat rather than just names. Orb weavers are easy to spot due to their large circular webs, while wolf spiders are ground hunters without webs. Knowing whether a spider is venomous or harmless is important for safety. For homeowners, recognizing common indoor spiders like the common house spider and cellar spider can help manage pest control effectively. Also, consider the spider’s behavior—whether it hunts actively or waits in webs—as this influences their role in the local ecosystem.
Frequently Asked Questions
Are any spiders in Ohio dangerous to humans?
Only the Northern Black Widow and, rarely, the Brown Recluse pose medically significant bites. However, bites are infrequent and usually avoidable.
Do spiders in Ohio bite often?
Spiders generally avoid humans and bite only in self-defense. Most bites are minor or mistaken for other insect bites.
How can I tell if a spider is venomous?
Look for distinctive markings like the black widow’s red hourglass or the brown recluse’s violin shape. Otherwise, most spiders are harmless.
What is the best way to get rid of spiders indoors?
Keep areas clean and dry, seal cracks, and remove webs regularly. Spiders often enter seeking shelter and food.
Are spiders beneficial in Ohio gardens?
Yes, spiders control pest populations by feeding on insects harmful to plants.
Can I keep any of these spiders as pets?
Some enthusiasts keep jumping spiders or tarantulas, but most Ohio spiders are wild and not commonly kept as pets.
Final Thoughts
Ohio hosts a diverse array of spider species, ranging from the small and harmless to the few that warrant caution. Understanding their habits, identification features, and ecological roles can help reduce fear and promote coexistence. Whether you encounter an orb weaver’s intricate web or a quick-moving wolf spider, these arachnids play vital roles in maintaining balanced ecosystems across the state.
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