Spiders in Oregon: How to Identify the Ten Most Common

Spiders in Oregon are a common sight, with many different species found throughout the state. Unfortunately, some of these spiders in Oregon are venomous and can potentially threaten humans, while others are completely harmless.

In this article, we will explore the ten most common spiders in Oregon and provide information on their appearance, behavior, and potential dangers they may pose.

Spiders in Oregon
Male vs Female black widow spiders. Photo credit: Shutterstock/Lighttrace Studio

Western Black widow spiders in Oregon.

Be wary of the western black widow in Oregon, a venomous spider with an unmistakable appearance. It is shiny and jet-black, with a bright red hourglass shape on its abdomen. The female of this species is larger than the male counterpart and more venomous; she has even been known to consume him after mating.

Bites from these spiders can be particularly dangerous for young children or elderly individuals, causing muscle cramps, queasiness, and difficulty breathing. Although spider bites are uncommon, they commonly occur when spiders feel threatened or squeezed.

To prevent being bitten by a spider, thoroughly inspect clothes and shoes before wearing them and be mindful of any materials in which the arachnid may be hiding.

Spiders in Oregon
Yellow sac spider. Photo credit: Shutterstock.com/Rainer Fuhrmann

Yellow sac spiders in Oregon.

Found in gardens, fields, and grassy areas around Oregon, the yellow sac spider is easily recognizable for its typically beige hue. Don’t let their small size fool you; these little arachnids are venomous.

Fortunately, a bite from one of these critters can generally be treated with ordinary over-the-counter pain medication and should not cause too much distress or panic. Keep an eye out while enjoying outdoor activities – they spin silken tubes that look like mini sack webs where they live.

The effects of a yellow sac spider bite can be severe, ranging from redness and swelling to nausea and vomiting. To prevent being bitten, it is vital to remain alert when in spaces where the arachnid may reside as well as wear protective clothing if needed.

Spiders in Oregon
Adult Female Wolf Spider of the Family Lycosidae. Photo credit: Shutterstock.com/Vinicius R. Souza

Wolf spiders in Oregon.

The wolf spider is a frequent inhabitant of Oregon and is renowned for its considerable size as well as predatory hunting style. It can usually be spotted in gardens or grassy areas due to its namesake features—from its menacing look to the wolf-like behavior it displays.

Despite being venomous, these spiders are not particularly hazardous; their bites can be treated with regular over-the-counter painkillers. Symptoms of a wolf spider bite may include redness, swelling, pain at the bite site, nausea, and vomiting.

To avoid being bitten, it is crucial to be cautious when working or playing in areas where the spider may be found and to wear protective clothing if necessary.

Spiders in Oregon
Front closeup of a Brown Recluse spider. Photo credit:Shutterstock.com/Sari O’Neal.

Brown recluse spider in Oregon.

The brown recluse may not be native to Oregon, but it can still be found in the area. This venomous arachnid is easily recognizable due to its characteristic dark brown color and telltale violin-shaped marking on its back.

Though they are typically nonaggressive, their bites can have serious consequences if left untreated, including necrosis (tissue death) at the bite site. Symptoms of a brown recluse bite may include fever, chills, rash, pain, and swelling at the bite site.

To avoid being bitten, it is vital to be cautious when handling materials or objects the spider may be hiding in and to shake out clothing and shoes before putting them on.

Spiders in Oregon
Hobo spider eating a beetle. Photo credit: Shutterstock.com/Corlaffra

Hobo spiders in Oregon.

The hobo spider is a native of Oregon and is known for its large size and brown color. It is usually found in gardens, fields, and grassy areas and is named for its hobo-like appearance and behavior.

The hobo spider is venomous, but bites are generally not severe and can be treated with over-the-counter pain medication. It’s important to be mindful when in areas with hobo spiders, as their venomous bites can cause redness, swelling, and excruciating pain. Other accompanying symptoms include nausea and vomiting, so don’t take any chances – wear protective gear just in case.

Spider in Oregon
Common house spider.

House spider in Oregon.

In Oregon, the House Spider is an all-too-familiar sight – its small size and brown/grey color easily distinguish it. It can be discovered in dwellings such as homes, buildings, or other structures, earning it the name “House Spider” due to its preference for human habitation.

House spiders may not be venomous, but bites can still cause skin irritation and minor discomfort. To prevent this from happening in the first place, make sure to keep your home or building free of debris and sealed off with no cracks or openings for them to enter through. This simple action could save you a lot of trouble down the road.

Yellow garden spiders in Oregon.

Touted for its distinct yellow and black coloration, the Oregonian yellow garden spider is a familiar sight in many gardens and grasslands. It is signature circular webs make it instantly recognizable, hence earning it its name. It’s an arachnid of choice to spot outdoors any time of year.

The yellow garden spider is not venomous, and bites are not harmful to humans. However, some people may experience mild symptoms such as redness and itching at the bite site. To avoid being bitten, it is crucial to be cautious when working or playing in areas where the spider may be found and to wear protective clothing if necessary.

Crab spiders in Oregon
Xysticus cristatus Common crab spider

Crab spiders in Oregon.

The Oregon-native crab spider is famous for its uncanny resemblance to a real crab and is further distinguished by the remarkable ability it has to blend into any background. This fascinating creature can be found in flowerbeds, meadows, or other grassy areas – a perfect spot for ambush hunting! With such clever adaptability, this mesmerizing arachnid lives up to its name perfectly.

Although the crab spider does not possess venom that can endanger humans, its bite may still induce minor symptoms like redness and itching. To prevent being bitten by this creature, it is a must to be attentive when working or playing in areas where they might be lurking and wear protective clothing if possible.

Jumping spiders in Oregon
Jumping spider. Photo credit: Shutterstock.com/aep3

Jumping spider in Oregon.

The skittish jumping spider is a common sight in Oregon, renowned for its diminutive size and astounding athleticism. Abounding in gardens, fields, and verdant meadows throughout the state, it earns its namesake from fabled feats of agility that would be impressive even by human standards.

Although the jumping spider is non-venomous and its bite is harmless to humans, some may still experience slight discomforts such as itching or redness in the affected area. To reduce the chances of being bitten, be mindful when exploring areas inhabited by this species and consider wearing protective clothing if needed.

Orb weaver spiders in Oregon
Argiope pulchella Orb weaver spider

Orb weaver spiders in Oregon.

The orb weaver spider is a typical sight in Oregon, where it elicits its moniker for the impressive and intricate circles of webs it builds. This species can be found flourishing in gardens, fields, and grassy knolls alike.

Though the orb weaver spider isn’t venomous and its bites are not dangerous to us, some may experience minor symptoms like redness or itching at the bite site. For that reason, it is essential to be wary of possible places where they can lurk while working or playing outdoors; moreover, wearing protective clothing could also prove helpful in keeping you from getting bitten by one.

A selection of fascinating spiders in Oregon.

cross orb-weavers in Oregon
European garden spider, diadem spider, orangie, cross spider and crowned orb weaver (Araneus diadematus). Photo credit: Shutterstock.com/Erik Kartis.

Cross orb-weaver spiders in Oregon: Identification.

The Cross orb-weaver spider (aka, European garden spider, diadem spider, orangie, cross spider, and crowned orb weaver), is scientifically classified as Araneus diadematus. However, it goes by other names, such as the pumpkin spider, although this can be confused with another species: Araneus marmoreus.

This particular type of orb-weaving arachnid is native to Europe but has spread its webby wings over to North America, where it now resides too!

Cross orb-weaver spiders in Oregon vary significantly in color, from the faintest yellow to a deep grey. Uniquely though, all of them have white mottling on their backs with four or more segments that form a cross shape. In terms of length, adult females reach up to 0.8 inches while males grow as long as 0.5 inches – and what’s more, they can sometimes consume the male after mating!

cat-faced spiders in Oregon
Hanging, Araneus Gemmoides spider. Photo credit: Shutterstock.com/Harsh Kapoor.

Cat-Faced Spiders in Oregon: Identification.

As widely known, the cat-faced spider is an orb weaver species found throughout the Western United States. Its name derives from its distinct body shape – if viewed from the front, it appears “cat-faced,” while others find that its form resembles a diamond or precious jewel. This insect comes in many vibrant colors and hues ranging from white to bright orange and dark brown tones.

The Cat-faced spider is a small creature that typically reaches lengths between 0.2 and 1 inch. In addition, this spider species have much shorter legs than its large abdomen size.

The Cat-faced spider in Oregon is a unique species with two horn-shaped protrusions on its sizeable abdomen and coloration that adapts to the season. It can be found near light fixtures, in small spaces, or on the sides of buildings, hidden under wood piles, overhangs, and animal burrows. This arachnid’s presence offers nature enthusiasts an exciting opportunity for exploration.

triangulate cobweb spiders in Oregon
Triangulate Cobweb Spider (Steatoda triangulosa) overwhelmed and paralyzed by solitary wasp species Trypoxylon figulus as prey for the larva. Shutterstock.com/Timelynx

Triangulate cobweb spiders in Oregon: Identification.

At first glance, this tiny Triangulate cobweb spider might be easily overlooked since it tends to build its cobwebs in dark corners of households and basements. Measuring only 1/8 – ¼ inch long, the cephalothorax is brownish-orange, while each of its yellow legs contains darker sections at their tips.

The abdomen has a finely pubescent texture with shades of brown and white, triangular spots along the mid-dorsal part, and irregular markings adorn the lateral area.

Triangulate cobweb spider in Oregon: Habitat.

The Triangulate cobweb spider is abundant locally around houses in North America, spreading rapidly since its introduction. Although rare in South America, evidence of sightings has also been recorded there.

You’ll often find these brush-footed spiders (Theridiidae family) in urban environments, near human constructions, tucked away on walls’ dark corners, around windowsills, and beneath eaves. They weave irregular webs that they hang from as a trap for their victims, using the sharp bristles of their hind legs to ensnare them with sticky silk before finally biting down when the prey is stilled.

The Triangulate cobweb spider in Oregon is a predator to be wary of, as it can often be found close to the brown recluse and common house spiders. Hiding out inside closets, crevices, and other nooks, this arachnid has been known to feast on ants, ticks, and pillbugs – not to mention its kind!

Texas dwellers should take extra care; reports indicate they may even prey upon fire ants nesting within utility equipment housings.

barn funnel weavers in Oregon
A macro shot of a barn funnel weaver on its cobweb. Photo credit: Shutterstock.com/ Wirestock Creators

Barn funnel weavers in Oregon.

Barn Funnel Weaver spiders (Tegenaria domestica) are a species that is widespread across the United States, from outbuildings and barns to crevices in door frames and cracks of rock faces. It can often be found hidden beneath boards or even underneath rocks!

Female Barn funnel weavers in Oregon average a meager half an inch in length, and male counterparts merely one-third of an inch. As a result, their cephalothorax is colored with red-brown hues, adorned by light yellow hairs and two subtle gray streaks running along its length. Meanwhile, the abdomen varies from pink to pale flesh tints featuring grey to black blotches. On top of that, their legs are spiny appendages topped off with faint grey stripes at the end of each femur.

Much like the webs of grass spiders, these webs are usually smaller in size, and the retreats for these spinners lie within the web sheet instead of being found to one side.

Spiders in Oregon: Conclusion.

In conclusion, spiders are a common sight in Oregon and range in size, color, and behavior. Some, such as the western black widow and brown recluse, are venomous and can potentially threaten humans, while others, such as the house spider and orb weaver, are entirely harmless.

It is essential to be aware of the different types of spiders that may be found in the area and to take appropriate precautions to avoid being bitten. Following these simple steps allows you to enjoy the outdoors without fear of spider bites.

Further recommended reading about spiders.

Spider pages: Learn how to identify and avoid these spiders.

Striped spider in the U.S.

How long do spiders live?

Spider anatomy 101.

The most venomous spiders in the world.

Zebra spiders.

Furrow orb weaver spider.

Marbled orb weaver spiders.

Red house spider identification.

Purse web spider.

Crab spider: How to identify.

Orb weaver Spiders: How to identify and get rid of them.

Common house spiders: How to Identify and get rid of them.

Dark fishing spiders.

Six-Eyed Sand Spider: Is the White Sand Spider Dangerous?

10 biggest spiders in the world.

The Red widow spider

Giant Huntsman Spider: How to Identify the Largest Spider

Brazilian salmon pink bird-eating tarantula

Brazilian Giant Tawny Red Tarantula

Colombian Giant Redleg Tarantula

Cerbalus Aravaensis: Middle East’s Largest Spider

Camel spiders: Myths and Facts.

Net-casting spiders: How to identify these spiders.

White-tailed spider: How to identify and manage.

Katipo Spider: How to identify New Zealand’s venomous spider

Brown widow spider: How to identify and avoid the false widow.

Redback spiders how to identify them and prevent bites

Funnel weaver spiders vs funnel-web

Cellar spiders how to identify and get rid of them

How to identify the wolf spider

How to identify the hobo spider

Brazilian wandering spider how to identify and avoid

Huntsman spider how to identify the eight legged freak

Jumping spiders how to identify these harmless hunters

Black widow spiders how to identify and avoid

Tarantulas appearance diet and mating

Do tarantulas bite?

Brown recluse spiders how to identify and avoid

Dennis V. Gilmore Jr.

Dennis V. Gilmore Jr. is a former Marine Sergeant and the author of several books, including two on night hunting coyotes and red and gray fox. He has written several hundred articles on predator hunting for ThePredatorHunter.com.

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