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Yellow garden spider

Argiope aurantia

Om navnet: The genus name Argiope means "silver-face" and the species name aurantia means "gilded", giving a Latin name that translates to "gilded silver-face".1

HarmløsHarmløs for mennesker. Intet at bekymre sig om.

Edderkopper

BidSpiser: Kød

Fare for mennesker: MildSom et bistik eller mindre. Stort set harmløst for mennesker.

The yellow garden spider is a large, colourful spider with yellow and black markings on its abdomen. It builds big round webs in sunny fields, gardens and along the eaves of houses in North America, Mexico and Central America. It bites only if disturbed or handled, and its bite is comparable to a bee sting.1

Lever i

Contiguous United States, Hawaii, southern Canada, Mexico and Central America; found from Canada to Colombia, but less often in the basin and mountain areas of the Rockies.1

Nordamerika

Forside

Yellow garden spiders build webs in open, sunny fields, where they stay concealed and sheltered from the wind. They are also found along the eaves of houses and outbuildings, and in any tall vegetation where a web can be stretched securely.1

Længde

2,8 cm (1,1 in)1

Tophastighed

cirka 1,3 km/t (0,81 mph)

På land, groft gæt

Hvad spiser det?

The spider waits in the centre of its web for prey to become trapped. It may shake the web back and forth to trap the insect further, then kills the prey with venom and wraps it in a silk cocoon to eat later, typically 1–4 hours afterwards. Prey includes insects and small vertebrates such as geckos and green anoles.1

Foto af Yellow garden spider — Yellow garden spider. Foto: Judy Gallagher. CC BY 2.0, Wikimedia Commons.

Sådan genkender du det

Yellow and black markings on the abdomen (the rear part of the body).1
A mostly white front body section (cephalothorax).1
A large, circular web up to 60 cm across, with a dense zigzag of silk in the centre.1
The female sits in the centre of the web, usually facing straight down.1
Females measure 19–28 mm in body length, while males are much smaller at 5–9 mm.1

Giftkraft

Bid

Giften kommer ud gennem gifttænderne eller tænderne, når det bider.

Hvad gør dets gift, når det bider eller stikker?

The venom contains polyamine toxins, including one called argiotoxin ArgTX-636, which are being studied for possible medical uses. For most people the venom is harmless, and a bite causes redness and swelling, similar to a bee sting. It is harmless to people who are not allergic.1

Hvor farligt er det for mennesker?

Fare for mennesker: MildSom et bistik eller mindre. Stort set harmløst for mennesker.

These spiders are not aggressive and only bite if grabbed or disturbed. For a healthy adult, a bite is not considered an issue. People who are very young, elderly, or have weakened immune systems should take the same care they would around a beehive or hornet nest.1

Hvad gør det, når det er bange?

If disturbed by a possible predator, the female may drop from her web and hide on the ground nearby, and she can shake the web vigorously while staying attached in the centre.1

Hvis det bider

Vask biddet, og læg en ispose på mod smerterne. Få lægehjælp, hvis smerterne er stærke, breder sig, eller personen har det dårligt.

Ring altid først til dit alarmnummer (112, 000, 911). Dette er generel førstehjælpsvejledning, ikke lægelig rådgivning. Grundlæggende førstehjælp

Pas på dig selv

Rør aldrig ved, fang eller dril et vildt dyr, heller ikke et lille et, og heller ikke hvis det ser ud til at sove eller være dødt.
Giv det plads. Hvis du møder et, så bliv rolig, træd langsomt tilbage, og lad det gå sin egen vej.
Hvis et bider dig: Bevar roen, hold dig i ro, ring til dit alarmnummer (112, 000, 911), eller kom hurtigt på hospitalet. Husk, hvordan det så ud, et billede hjælper.

Det er ikke ude efter dig. Det bruger sin gift til at fange føde eller beskytte sig selv, og det gemmer sig meget hellere. Mere om sikkerhed

Hvor i verden?

Afrika Asien Europa Nordamerika Sydamerika Australien & Oceanien

Hvor stort er det?

Hvor langt er det?

cirka lige så lang som en papirclipskunne løbe 100 meter på 280 sekunder (det hurtigste menneske skal bruge 9,6)

Hvor stor er Yellow garden spider i forhold til DIG?

Bare matematik i din browser. Intet bliver gemt eller sendt nogen steder hen.

Hvor hurtigt er det?

En skildpadde cirka 0,3 km/t (0,19 mph)

Yellow garden spider cirka 1,3 km/t (0,81 mph)

Et menneske, der går cirka 5 km/t (3,1 mph)

værd at vide

Fakta

The female can shake her web vigorously to make it harder for wasps and birds to target her, and to fully tangle an insect before it cuts itself free.1

After mating, the male often dies and is sometimes eaten by the female, as he inserts his second palpal bulb.1

The zigzag silk in the web, called a stabilimentum, may camouflage the spider, attract prey, or warn birds away, but its purpose is still disputed.1

In a case observed in Georgia, a European hornet cut free prey caught in a yellow garden spider's web, and the spider did not fight it, probably because it dropped from the web and hid.1

Myteknuser

Myte: Yellow garden spiders are dangerous and their bite can seriously harm a healthy adult.

Sandhed: The venom is harmless to people who are not allergic. A bite is comparable to a bumblebee sting and is not considered an issue for healthy adults.1

For gifteksperter

Videnskabeligt navn: Argiope aurantia
Gruppe: Edderkopper
Familie: Araneidae2
Orden: Araneae
Kontinenter: Nordamerika
Unger: Each female produces one to four egg sacs, each holding perhaps over a thousand eggs, and in spring the tiny spiderlings emerge and some are carried away on silk strands by the breeze.1
Fare for mennesker: 1 / 5: Mild3

Hvor fakta kommer fra

Argiope aurantia (Wikipedia (CC BY-SA 4.0))
Argiope aurantia (iNaturalist): navne og klassifikation.
Venom Wiki: fareniveauet, den typiske størrelse og hastighedsgættet er vores egne. Se, hvordan vi regner dem ud: Sådan vurderer vi faren.

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