Are green lynx spiders poisonous

Venomous or poisonous: what is the real question?

People usually ask whether a spider is “poisonous” when they want to know whether it can hurt them. The two words describe different things. A poisonous animal causes harm when it is eaten or touched. A venomous animal delivers venom actively, which in spiders means through the fangs.

Almost all spiders are venomous, and the green lynx spider is no exception. Having venom, though, says little about the risk to a person. What matters is how often the spider bites, whether its fangs and venom produce more than a local reaction, and how people usually come into contact with it. On all three counts, the green lynx spider is a low-risk animal.

What happens if a green lynx spider bites you

Bites are uncommon. The University of Florida’s Featured Creatures profile notes that this species very seldom bites people. Most bites happen when someone grabs or presses against a spider, or handles plants where a female is guarding eggs.

The most useful medical source is a 2000 report in the American Journal of Emergency Medicine that described four people bitten by green lynx spiders. Their effects stayed at the bite site:

• pain at the bite
• itching
• redness
• a firm, raised area of skin

None of the four developed tissue death (necrosis) or symptoms elsewhere in the body. Treatment was ordinary wound care, symptom relief and a tetanus update. Four cases is a small number, so this is not a guarantee of how every person will react, but it matches the long-standing view that the bite is painful at worst and not dangerous.

Can green lynx spiders spit venom?

Yes, and this is the behavior that most separates them from ordinary garden spiders. Arachnologist Linda Fink described it in the Journal of Arachnology in 1984 after liquid repeatedly landed on her face and hands while she was counting spiders in the field.

What she reported:

• Who spits: adult females. The observations were made in autumn, when the adult population was almost all females, so it is still unclear whether males and young spiders do the same.
• When: most often on a first approach, such as moving in front of the spider or gently pulling one of its front legs. A female that did not spit right away usually did not spit after more prodding.
• How far: droplets reached about 20 cm (roughly 8 inches). The spray is aimed by turning the whole body toward the target.
• Why: it appears to be defensive. It is not used to catch prey.

Fink described the liquid as bitter-tasting and irritating to the eye. Her paper also points to a 1946 account of a soldier who said a spider, later identified as this species, sprayed his eye. He was reported to have moderately severe chemical conjunctivitis and blurred vision for two days. A 2025 profile from the LSU AgCenter likewise notes that bites are not medically significant but that venom in the eye can cause a serious eye injury, and it recommends watching these spiders from a safe distance.

The green lynx spider is not the only spider that spits. Spitting spiders (family Scytodidae) also squirt a venom-and-silk mixture, though they use it to pin down prey at very short range.

How to avoid bites and venom spray

• Do not pick one up. Let it walk onto a stick or into a container if you need to move it.
• Keep your face back. Photographing or watching from arm’s length or more is enough to stay outside the reported spitting range.
• Take care around egg sacs. Females guard their sacs closely and are the ones most likely to defend themselves. In the United States, egg sacs are usually made in late summer or autumn in the upper branches of shrubs.
• Wear gloves and eye protection when clearing dense shrubs in areas where these spiders are common, particularly in late summer and autumn.

What to do if you are bitten or sprayed

For a bite

• Wash the area gently with soap and water.
• Apply a cool, damp cloth to ease pain and swelling, and raise the area if you can.
• Over-the-counter pain relief or anti-itch products can help with discomfort.

For venom in the eye

• Remove contact lenses.
• Rinse the eye with room-temperature water for 15 to 20 minutes, timed by a clock. A gentle shower or water poured from a glass works.
• Do not put eye drops in afterward unless a medical professional tells you to.
• In the United States, call Poison Help at 1-800-222-1222 for advice. In other countries, contact your local poison information service or emergency services.

When to get medical care

• pain, blurred vision or a gritty feeling in the eye that continues after rinsing
• redness or swelling around a bite that spreads, shows streaks, or keeps growing
• severe pain, trouble breathing or trouble swallowing
• you are not sure what bit you

This page is general education, not medical advice. If symptoms are severe or getting worse, contact a medical professional.

How to recognize a green lynx spider

Many spiders are green, so color alone is not enough. Look for several of these features together, and consider where you are, since this species lives in the Americas.

In the southwestern United States, a close relative, Peucetia longipalpis, overlaps in range and looks very similar. Telling the two apart requires examining a mature male’s palps, so in that region “a green lynx spider (Peucetia)” is often the most honest identification from a photo. If you are not sure what you found, our spider identification guide walks through which clues to check.

Where green lynx spiders live

The World Spider Catalog lists Peucetia viridans from North and Central America, the Caribbean and Venezuela. In the United States it is found across most of the southern states from coast to coast, and it also occurs in Mexico, Central America and the West Indies.

It lives on low shrubs and leafy, non-woody plants rather than in houses. Gardens, field edges, scrub and crop fields are typical places to see one. In Louisiana, for example, they are often found on autumn-blooming goldenrod. A green lynx spider indoors is almost always an accidental visitor carried in on plants or flowers.

Why many gardeners leave them alone

Green lynx spiders do not build webs. They hunt by sitting still on plants, then running and leaping onto prey, which is where the “lynx” name comes from. Their diet includes moths that damage crops, such as corn earworm and cabbage looper moths and their caterpillars.

They are not perfect pest controllers, though. They also take honey bees, wasps, hover flies and tachinid flies, many of which are useful in a garden. University of Florida researchers have described them as important predators of crop moths whose value is limited by this appetite for beneficial insects. For a wider look at what spiders contribute, see why spiders are important.

Egg sacs and guarding behavior

In the United States, green lynx spiders usually mate in July and August. A few weeks later the female builds an egg sac, most often in September or October, though females in the southern part of the range may make more than one. A sac holds roughly 25 to 600 bright orange eggs, about 200 on average.

The female stays with the sac, often hanging upside down beneath it, and guards it until the young emerge. Eggs hatch in about 11 to 16 days, and the spiderlings leave the sac a little later, sometimes after the mother tears it open. There is usually one generation a year, with young spiders spending the winter as small juveniles. This guarding period is when you are most likely to meet a defensive female.

Image prompt: Realistic natural-history macro photograph of an adult female green lynx spider (Peucetia viridans) hanging upside down beneath a tan, slightly spiky purse-shaped silk egg sac fastened among the upper twigs of a green shrub in late summer. Translucent bright green body with small red spots, pale green-yellow legs with long black spines and black spots, exactly eight legs, anatomically accurate proportions, true-to-life size, soft natural daylight, shallow depth of field, no text, no watermark, no exaggerated or menacing pose.

Frequently asked questions

For more on realistic spider risks in general, visit our spider bite and danger section, or browse other species in spider types.