Green Lynx (Peucetia viridans)

Physical description and identification

The green lynx is the largest lynx spider (Oxyopidae) in North America, and little else on a flower head resembles it: a translucent leaf-green body on long, pale legs bristling with black spines. Colour is not fixed — individuals on yellow or dried vegetation shift toward straw, pink or rust, and the pigment drains away in preservative, so museum specimens look nothing like living spiders.

Adults

• Size: females 12–22 mm in body length, males about 12 mm, so a mature female has roughly twice the bulk. A large female spans 40–50 mm with her legs spread.
• Colour: bright green over carapace, abdomen and legs, usually with pale or burgundy chevrons pointing forward along each side of the abdomen and a scatter of small dark dots on the legs. Red or orange flecks around the eyes and leg joints are common in adults.
• Eyes: eight eyes in the hexagonal pattern that defines the family — a small forward pair low on the face and six larger eyes in a raised hexagon above. It gives near all-round vision and is the most reliable family character; compare it in our guide to spider eyes.
• Other features: long, erect black spines set on dark spots along the legs, a sharply tapering abdomen, and a high, rounded carapace. Males are slimmer, longer-legged and have club-shaped pedipalps.

Eggs and egg sacs

Egg laying peaks in September and October. The female builds a rounded straw to pale-green sac about 2 cm across and slings it in a scaffold of silk guy lines among the flower heads she hunts on. A sac holds roughly 25 to 600 vivid orange eggs, and a female may build up to five over a season, the later ones smaller. She hangs upside down beneath it, barely feeds, and attacks anything that approaches. Eggs hatch in about two weeks.

Spiderlings

Hatchlings stay in the sac for another fortnight on stored yolk, then emerge as a bright orange cluster while the mother continues to stand guard. They scatter within days, many on short silk lines carried by the breeze, and pass through around eight instars before maturity, growing by moulting. Juveniles overwinter part-grown in litter and dead vegetation in the cooler parts of the range.

Hunting instead of a web

Green lynx spiders build no capture web; silk goes only into draglines, the egg sac and moulting anchors. The spider hunts by day, holding still on a petal with its front legs raised, tracking a visitor with that hexagon of eyes, then closing the last few centimetres in a rush or an outright leap — the behaviour behind the name "lynx". A dragline is paid out first, so a miss ends with the spider swinging rather than falling. Prey is scooped in the spiny front legs and bitten at once.

Where green lynx spiders live

Peucetia viridans is an American species of warm climates. In the United States it runs across the southern tier, from the Carolinas and Florida west through the Gulf states and Texas to Arizona and southern California. Older accounts that place it in northern California are not supported by the collection record; the Californian populations are southern. Beyond the US it continues through Mexico and Central America, is widespread in the West Indies, and reaches northern South America, with Venezuela marking roughly the southern limit.

Habitat is consistent: low, dense, herbaceous vegetation in full sun — goldenrod, ragweed, cotton, soybean, sunflower, prickly pear, lantana and the shrubby margins of fields, roadsides, gardens and groves. The spider stays in the flowering canopy and rarely comes down except to overwinter as a juvenile. It is not a house spider; indoor specimens almost always arrive on cut flowers or garden produce.

Are green lynx spiders venomous?

Yes — like almost all spiders it is venomous, and it uses that venom to drop insects quickly, often prey larger than itself. Medically it does not matter. There is no antivenom, none is needed, and no verified serious poisoning has been attributed to the species. The fangs are short and the venom carries neither the tissue-destroying enzymes of the recluse spiders nor the neurotoxins of the widows, so it does not belong on any list of medically dangerous spiders.

It does have one unusual habit: a guarding female can eject venom as a spray rather than delivering it by biting. Observations put the range at up to about 20 cm (8 inches); popular accounts stretch this to a foot or more. In the eyes the spray causes stinging, watering and temporary inflammation — a real reason to keep your face away from a guarded egg sac even though the bite itself is trivial.

Can green lynx spiders bite?

They can, but it takes provocation. Away from an egg sac a green lynx almost always retreats — sidestepping round a stem, dropping on a dragline or leaping clear. Bites come from two situations: handling the spider, and disturbing a female standing over her eggs, when she holds her ground and strikes.

Effects are mild and local: a sharp pinprick, a small red weal, some swelling and itching, occasionally an ache that eases within hours. The site usually looks normal again in a day or two. Wash with soap and water, apply a cold pack and keep it clean. Seek medical advice if pain is severe or spreading, if swelling involves the face or throat, or if the wound looks infected — those point to allergy or secondary infection, not venom. Never apply heat, cuts or suction.

Ecological importance and behaviour of the green lynx spider

This is a diurnal, visually guided ambush hunter and one of the most studied predatory spiders in agricultural research, because it sits exactly where crop pests feed. Moths, butterflies and caterpillars dominate the diet, with flies, bees, wasps, true bugs and beetles making up the rest. It takes prey beyond its own body length, and in cotton and soybean it is recorded eating bollworms, loopers and armyworms — free pest control. See what spiders eat for the wider picture.

The other side of the ledger: hunting on flowers also means killing pollinators. Studies in flowering crops find honey bees forming a real share of the prey, which is why entomologists call the green lynx a mixed blessing rather than a straightforwardly beneficial species.

Natural predators: mud-dauber and spider-hunting wasps take lynx spiders to provision nests, and birds, anoles, mantises and larger spiders take them opportunistically. Parasitoid wasps and ants attack egg sacs. The camouflage that hides the spider from prey hides it from predators too.

Seasonal rhythm: adults appear from midsummer, mating runs through late summer, and egg sacs are built in September and October. Most adults die with the first hard cold and the species carries over as juveniles. Total lifespan is about a year; in frost-free areas generations overlap.

Relationship with people: harmless, and a striking garden animal. Coax one off a cut flower onto a stick and put it back outside; spraying only costs the garden a caterpillar predator.

Similar spiders and how to tell them apart

Quick facts

Did you know?

• The name viridans is Latin for "becoming green". The species was described in 1832 by Nicholas Marcellus Hentz, who named much of the early United States spider fauna.
• A guarding female can spray venom from her fangs without biting — one of very few spiders known to do this — over a distance of about 20 cm.
• These spiders are not fixed in colour; individuals on yellow or dried vegetation shift toward straw, pink or rust, and preserved specimens fade to cream.
• Because they hunt on cotton, soybean and vegetable crops they have been trialled in pest management programmes — though the same studies count the bees they take.
• With no web to give it away, the green lynx is usually spotted only when someone notices the orange eggs or the guarding female.

In summary, the green lynx is a large, harmless, day-hunting predator that lives its whole life on flowering plants. Learn the hexagonal eye group and the spiny legs and you can name it instantly.