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Noble false widow

Steatoda nobilis

O jménu: It is called a false widow because it looks like the black widow spider, although it belongs to a different group of spiders.1

Jen to bolíBolí to, ale vážně ti to neublíží.

Pavouci

KousnutíJí: Maso

Nebezpečí pro lidi: BolestivéMůže to hodně bolet, ale skoro nikdy to není vážné.

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

Žije v

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

Evropa, Afrika

Domů

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

Délka

7 mm až 1,4 cm (0,3 in až 0,6 in)1

Nejvyšší rychlost

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

Na souši, hrubý odhad

Co jí?

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

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

Jak ho poznat

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

Často se plete s: 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

Síla jedu

Kousnutí

Jed vychází jedovými zuby nebo zuby, když kouše.

Co dělá jeho jed?

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

Jak je nebezpečné pro lidi?

Nebezpečí pro lidi: BolestivéMůže to hodně bolet, ale skoro nikdy to není vážné.

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

Když kousne

Without proper treatment, a bite wound can become infected and develop into gangrene or sepsis, so medical care should be sought.1
Umyj místo kousnutí a dej na něj ledový obklad na bolest. Vyhledej lékařskou pomoc, pokud je bolest silná, šíří se nebo se postiženému udělá zle.

Vždy nejdřív zavolej na tísňovou linku (112, 000, 911). Jde o obecné rady k první pomoci, ne o lékařskou radu. Základy první pomoci

Buď v bezpečí

Nikdy se nedotýkej divokého zvířete, nechytej ho a neprovokuj, ani malé, a ani když vypadá, že spí nebo je mrtvé.
Nech mu prostor. Když ho potkáš, zůstaň v klidu, pomalu couvej a nech ho jít svou cestou.
Když tě kousne: zůstaň v klidu, nehýbej se, zavolej na tísňovou linku (112, 000, 911) nebo se rychle dostaň do nemocnice. Zapamatuj si, jak vypadalo, fotka pomůže.

Nejde po tobě. Jed používá k lovu potravy nebo k obraně a mnohem radši se schová. Víc o bezpečí

Kde na světě?

Afrika Asie Evropa Severní Amerika Jižní Amerika Austrálie a Oceánie

Jak je velké?

Jak je dlouhé?

tak malé, že se vejde na tvůj nehet

Noble false widow: jak je velké ve srovnání s TEBOU?

Jen matematika ve tvém prohlížeči. Nic se neukládá ani nikam neposílá.

Jak je rychlé?

Želva asi 0,3 km/h (0,19 mph)

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

Chodící člověk asi 5 km/h (3,1 mph)

stojí za to vědět

Fakta

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

Lovec mýtů

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

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

Pro znalce jedů

Vědecký název: Steatoda nobilis
Skupina: Pavouci
Rodina: Theridiidae2
Pořadí: Araneae
Kontinenty: Evropa, Afrika
Mláďata: 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
Délka života: asi 5 let1
Nebezpečí pro lidi: 2 / 5: Bolestivé3

Odkud fakta pocházejí

Steatoda nobilis (Wikipedia (CC BY-SA 4.0))
Steatoda nobilis (iNaturalist): jména a zařazení.
Venom Wiki: úroveň nebezpečí, typická velikost a odhad rychlosti jsou naše vlastní. Podívej se, jak je určujeme: Jak hodnotíme nebezpečí.

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