Venom Wiki / Totes les criatures / Aranyes

Núm. 0727 de 1 402

Tube web spider

Segestria florentina

Sobre el nom: The name green-fanged refers to the striking green shine of its fangs (chelicerae), which reflect green light.1

Només fa malFa mal, però no et farà cap mal greu.

Aranyes

MossegadesMenja: Carn

Perill per a les persones: DolorósPot fer molt de mal, però gairebé mai no és greu.

The tube web spider is a dark spider that builds a tube-shaped web in cracks in walls and buildings. It began in the Mediterranean region but has spread to many towns in southern Britain and other parts of the world. Its bite is reported to be very painful, so it is worth knowing what it looks like.1

Viu a

Originally the Mediterranean region as far east as Georgia; now many towns in southern Britain, and also Argentina, Australia, several Atlantic islands and Limerick in Ireland1

Europa

Inici

It spins its tube web often in cracks of buildings and prefers south-facing walls, especially brick structures. It has been found in towns, cathedrals and an abbey, including Exeter Cathedral and Westminster Abbey.1

Llargada

2,2 cm (0,9 in)1

Velocitat màxima

uns 1 km/h (0,62 mph)

A terra, estimació aproximada

Què menja?

It waits in the entrance of its tube and touches the silk lines with its front legs. When prey such as nocturnal moths and cockroaches triggers the lines, it is caught, and the spider pulls it into the tube to eat. Bees and wasps are always bitten at the head end, so the sting faces away from the spider.1

Foto de Tube web spider — Tube web spider. Foto: Lmbuga Commons. CC BY-SA 4.0, iNaturalist.

Com reconèixer-lo

Adults are a uniform black, sometimes with a green shine, especially on the fangs.1
Young spiders (subadults) have a greyish abdomen with a marking.1
It makes a tubular web with six or more silk lines radiating out from the entrance.1
Adults are seen from June to November.1
Females can reach a body length of 22 mm, and males up to 15 mm.1

Poder del verí

Mossegades

El verí surt pels ullals o les dents quan mossega.

Què fa el seu verí?

The venom contains two neurotoxins, which attack the nerves, and one insecticide. The venom reduces the rate and amount of sodium inactivation, a process in nerve cells. The bite is reported to feel like a deep injection, and the pain can last for several hours.1

Com de perillós és per a les persones?

Perill per a les persones: DolorósPot fer molt de mal, però gairebé mai no és greu.

The bite is reported to be extremely painful, but it is also said to feel like a bee sting, which places it at 2 on the Schmidt sting pain index. The bite has no lasting effects.1

Què fa quan té por?

When disturbed while feeding, it retreats further into its tube.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 360 segons (l'humà més ràpid necessita 9,6)

Que gran és Tube web 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)

Tube web spider uns 1 km/h (0,62 mph)

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

val la pena saber-ho

Dades

A population in Westminster Abbey has been proposed as a new subspecies, because its fangs are a brighter green and its members are significantly smaller than other European populations.1

Specimens have been found in Exeter Cathedral as far back as 1890.1

Females lay eggs in the bricks of south-facing structures during winter, so a female seen in September or October may already have laid eggs for the next spring.1

It is the largest European segestriid spider.1

In Britain it was probably introduced via seaports, with records going back at least to 1845.1

Per a experts en verins

Nom científic: Segestria florentina
Grup: Aranyes
Família: Segestriidae2
Ordre: Araneae
Continents: Europa
Cries: The female lays her eggs inside the tube web. Sometimes she dies after the spiderlings hatch, and they may eat their mother.1
Perill per a les persones: 2 / 5: Dolorós3

D'on surten les dades

Segestria florentina (Wikipedia (CC BY-SA 4.0))
Segestria florentina (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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