0727. zenbakia, guztira 1 402

Tube web spider

Segestria florentina

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

Min ematen du, besterik ezMin ematen du, baina ez dizu kalte larririk egingo.

Armiarmak

KoskaJaten du: Haragia

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

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

Non bizi den

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

Hasiera

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

Luzera

2,2 cm (0,9 in)1

Abiadura handiena

1 km/h inguru (0,62 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

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

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

Nola ezagutu

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

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

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

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

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

Zer egiten du beldurtzen denean?

When disturbed while feeding, it retreats further into its tube.1

Kosk egiten badu

Garbitu koska eta jarri izotz-poltsa bat gainean minerako. Lortu mediku-laguntza mina handia bada, zabaltzen bada edo pertsona gaizki sentitzen bada.

Deitu beti lehenik zure larrialdi-zenbakira (112, 000, 911). Lehen sorospenei buruzko orientabide orokorra da hau, ez mediku-aholkua. Lehen sorospenen oinarriak

Egon seguru

Ez ukitu, ez harrapatu eta ez zirikatu inoiz animalia basati bat, txikia izan arren, eta lo edo hilda dagoela badirudi ere.
Utzi tartea. Bat aurkitzen baduzu, egon lasai, egin atzera poliki eta utzi bere bidetik joaten.
Batek kosk egiten badizu: egon lasai, egon geldi, deitu zure larrialdi-zenbakira (112, 000, 911) edo joan ospitalera azkar. Gogoratu nolakoa zen, argazki batek laguntzen du.

Ez dabil zure atzetik. Pozoia janaria harrapatzeko edo bere burua babesteko erabiltzen du, eta askoz nahiago du ezkutatu. Seguru egoteari buruz gehiago

Munduko zein tokitan?

Afrika Asia Europa Ipar Amerika Hego Amerika Australia eta Ozeania

Zein handia da?

Zein luzea da?

klip bat bezain luzea, gutxi gorabehera100 metro 360 segundotan egin litzake (gizakirik azkarrenak 9,6 behar ditu)

Zein handia da Tube web spider ZUREKIN alderatuta?

Matematika hutsa zure nabigatzailean. Ez da ezer gordetzen, ezta inora bidaltzen ere.

Zein azkarra da?

Dortoka bat 0,3 km/h inguru (0,19 mph)

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

Oinez doan pertsona bat 5 km/h inguru (3,1 mph)

jakin beharrekoa

Datuak

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

Pozoi-adituentzat

Izen zientifikoa: Segestria florentina
Taldea: Armiarmak
Familia: Segestriidae2
Ordena: Araneae
Kontinenteak: Europa
Kumeak: The female lays her eggs inside the tube web. Sometimes she dies after the spiderlings hatch, and they may eat their mother.1
Arriskua pertsonentzat: 2 / 5: Mingarria3

Datuak nondik datozen

Segestria florentina (Wikipedia (CC BY-SA 4.0))
Segestria florentina (iNaturalist): izenak eta sailkapena.
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