Venom Wiki / Totes les criatures / Aranyes

Núm. 0712 de 1 402

Yellow garden spider

Argiope aurantia

Sobre el nom: 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

InofensiuInofensiu per a les persones. No t'has de preocupar de res.

Aranyes

MossegadesMenja: Carn

Perill per a les persones: LleuCom una picada d'abella o menys. Pràcticament inofensiu per a les persones.

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

Viu a

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

Amèrica del Nord

Inici

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

Llargada

2,8 cm (1,1 in)1

Velocitat màxima

uns 1,3 km/h (0,81 mph)

A terra, estimació aproximada

Què menja?

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

Com reconèixer-lo

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

Poder del verí

Mossegades

El verí surt pels ullals o les dents quan mossega.

Què fa el seu verí?

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

Com de perillós és per a les persones?

Perill per a les persones: LleuCom una picada d'abella o menys. Pràcticament inofensiu per a les persones.

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

Què fa quan té por?

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

Si mossega

Renta la mossegada i posa-hi gel per al dolor. Busca ajuda mèdica si el dolor és fort, s'estén o la persona es troba malament.

Truca sempre primer al número d'emergències (112, 000, 911). Això són pautes generals de primers auxilis, no consells mèdics. Primers auxilis bàsics

Estigues segur

No toquis, atrapis ni molestis mai un animal salvatge, encara que sigui petit i encara que sembli adormit o mort.
Deixa-li espai. Si en trobes un, mantén la calma, recula a poc a poc i deixa que segueixi el seu camí.
Si te'n mossega un: mantén la calma, no et moguis, truca al número d'emergències (112, 000, 911) o ves de pressa a un hospital. Recorda com era, una foto ajuda.

No va a per tu. Fa servir el verí per caçar o per defensar-se, i prefereix mil vegades amagar-se. Més sobre com estar segur

On del món?

Àfrica Àsia Europa Amèrica del Nord Amèrica del Sud Austràlia i Oceania

Que gran és?

Quant fa de llarg?

més o menys el que fa de llarg un clippodria recórrer 100 metres en 280 segons (l'humà més ràpid necessita 9,6)

Que gran és Yellow garden spider comparat amb TU?

Només càlculs al teu navegador. No es desa ni s'envia res enlloc.

Com de ràpid va?

Una tortuga uns 0,3 km/h (0,19 mph)

Yellow garden spider uns 1,3 km/h (0,81 mph)

Una persona caminant uns 5 km/h (3,1 mph)

val la pena saber-ho

Dades

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

Desmuntamites

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

Veritat: 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

Per a experts en verins

Nom científic: Argiope aurantia
Grup: Aranyes
Família: Araneidae2
Ordre: Araneae
Continents: Amèrica del Nord
Cries: 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
Perill per a les persones: 1 / 5: Lleu3

D'on surten les dades

Argiope aurantia (Wikipedia (CC BY-SA 4.0))
Argiope aurantia (iNaturalist): noms i classificació.
Venom Wiki: el nivell de perill, la mida típica i la velocitat estimada són nostres. Mira com els calculem: Com valorem el perill.

Cada dada d'aquesta pàgina té un número que porta a la seva font. Si ens hem equivocat en alguna cosa, perdona, som fans dels animals, no una revista científica. Escriu-nos a [email protected] i ho arreglarem.

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