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Noble false widow

Steatoda nobilis

Izenari buruz: It is called a false widow because it looks like the black widow spider, although it belongs to a different group of spiders.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 noble false widow is a spider that looks a lot like the black widow, which is why it has its name. It is now found in many parts of the world, including Europe, the United States and New Zealand, and it is one of the world's most invasive spiders. Its bite can be painful, so it is worth knowing what it looks like.1

Non bizi den

Native to Madeira and the Canary Islands. Now established across Europe, parts of the USA, North Africa, Chile, Colombia, Ecuador and New Zealand.1

Europa, Afrika

Hasiera

It lives both indoors and outdoors all year round, in places such as cacti, agave, roadside cuttings, demolished buildings, telegraph poles, concrete fence posts and ivy on walls. Seaside cities and villages with a mild climate are especially good places for it.1

Luzera

7 mm eta 1,4 cm artean (0,3 in eta 0,6 in artean)1

Abiadura handiena

0,86 km/h inguru (0,53 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

It eats both insects and other spiders, woodlice, and small vertebrates such as pipistrelle bats and a pygmy shrew. It catches prey with an 'attack wrap', wrapping silk around the victim while it bites, and its venom quickly paralyses the prey.1

Argazkia: Noble false widow — Noble false widow. Argazkia: Dustin Edmundson. CC BY 4.0, iNaturalist.

Nola ezagutu

The abdomen (rear body) is brown and rounded, with cream markings that are often said to look like a skull.1
The legs are reddish-orange.1
Adult females are about 9.5 to 14 mm in size, and males are about 7 to 11 mm.1
It is larger than other spiders in its genus, Steatoda, and has a typical colour pattern.1

Askotan honekin nahasten da: It is often mistaken for the black widow (Latrodectus) and other false widow species. It can be told apart from the black widow by its larger size within its genus and its typical colouring, though many spiders in this group look similar.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

Most of its venom is made of toxins similar to those of the widow spiders, mainly alpha-latrotoxin. This toxin makes holes in nerve cells, which releases chemical messengers and blocks the signals between nerves and muscles, causing paralysis. In people, the venom is most noticeable as pain at the bite site, along with swelling, redness and fever.1

Zein arriskutsua da pertsonentzat?

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

It is considered moderately medically significant. Most bites cause symptoms similar to a bee or wasp sting, but some can be more serious, partly because of bacteria. It is considered one of the most dangerous spiders in western Europe. Bites from males are less severe than bites from females, and the bite itself is usually painless, with pain coming from the venom.1

Kosk egiten badu

Without proper treatment, a bite wound can become infected and develop into gangrene or sepsis, so medical care should be sought.1
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?

zure azazkalaren gainean esertzeko bezain txikia

Zein handia da Noble false widow 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)

Noble false widow 0,86 km/h inguru (0,53 mph)

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

jakin beharrekoa

Datuak

The spider often catches prey much larger than itself, including bats, because its venom works quickly.1

It can survive without drinking water, getting all its liquid from its prey.1

Males court females by tapping the web and vibrating their bodies, and they can make scraping sounds with their abdomens.1

It has poor eyesight and relies mainly on vibrations travelling through its web.1

It produces three-dimensional cobwebs, and its silk is unusually strong for its genus.1

One adult female lived almost five and a half years in captivity, and adult females are long-lived.1

Mito-hauslea

Mitoa: It is the same spider as the black widow.

Egia: It only looks similar to the black widow. It belongs to the genus Steatoda, while the black widow belongs to the genus Latrodectus.1

Pozoi-adituentzat

Izen zientifikoa: Steatoda nobilis
Taldea: Armiarmak
Familia: Theridiidae2
Ordena: Araneae
Kontinenteak: Europa, Afrika
Kumeak: Females make egg sacs containing an average of 94 eggs, with a range of 34 to 208 eggs. The young hatch inside the egg sac about 18 days after the eggs are laid.1
Bizi-iraupena: 5 urte inguru1
Arriskua pertsonentzat: 2 / 5: Mingarria3

Datuak nondik datozen

Steatoda nobilis (Wikipedia (CC BY-SA 4.0))
Steatoda nobilis (iNaturalist): izenak eta sailkapena.
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