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Chithunzi chojambula cha Western black widow
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Western black widow

Latrodectus hesperus
Ikufuna dokotalaSiipha kawirikawiri, koma kulumidwa kumafuna dokotala.
Akangaude ImalumaImadya: Nyama
Ngozi kwa anthu: YoopsaKulumidwa kumafuna dokotala. Imfa ndi zosowa kwambiri.

The western black widow is a venomous spider that lives in western North America. The female is black, often with a red hourglass mark on her belly, and her webs are tangled and irregular. Her venom is strong, so it is worth knowing what she looks like.1

Imakhala ku
Western North America: south-western Canada (British Columbia to Manitoba), the Pacific Coast, Texas, Oklahoma, Kansas, and Mexico1
Amereka ya Kumpoto
Kunyumba
It builds tangled webs low above the ground. It is commonly found near the Canada-US border and less commonly across the grasslands of the Canadian Prairies.1
Kutalika
1,4 cm mpaka 1,6 cm (0,6 in mpaka 0,6 in)1
Liwiro lapamwamba
pafupifupi 0,98 km/h (0,61 mph)
Pamtunda, kuyerekeza chabe
Imadya chiyani?
It hangs upside down near the centre of its web and waits for insects to land in it. It bites the prey, injects venom, and wraps it in silk. Beetles and ants, wasps and bumblebees make up most of its prey.1
Zoona!Chithunzi cha Western black widow
Western black widow. Chithunzi: Luke Padon. CC BY 4.0, iNaturalist.

Mmene ungaizindikirire

  • The female is about 14–16 mm long and black, often with an hourglass-shaped mark on the lower abdomen.1
  • The hourglass mark is usually red, but it can be yellow and, very rarely, white.1
  • The male is about half the female's length and is generally beige, with lighter striping on the abdomen.1
  • Its webs are irregular or tangled, with no obvious overall pattern.1

Nthawi zambiri imasokonezedwa ndi: It was once described as a subspecies of Latrodectus mactans and is closely related to the northern species Latrodectus variolus.1

Mphamvu ya ululu

Imaluma

Ululu umatuluka kudzera m'mano ake ikaluma.

Ululu wake umachita chiyani?

The female's venom contains a neurotoxin called α-latrotoxin, which attacks the nerves. In humans, its symptoms include pain, nausea, vomiting, goosebumps and localised sweating.1

Ndi yoopsa bwanji kwa anthu?

Ngozi kwa anthu: YoopsaKulumidwa kumafuna dokotala. Imfa ndi zosowa kwambiri.

Historical reports gave fatality rates between 0.5% and 12%. However, recent studies have not been able to confirm any deaths from the U.S. species of Latrodectus, including zero deaths among 23,409 documented bites from 2000 through 2008.1

Imachita chiyani ikachita mantha?

Juveniles and females can fling a sticky ball of silk at predators, which can stop most of them.1

Ikaluma

  • Sambitsa polumidwapo ndipo ikapo paketi ya ayezi kuti uchepetse kupweteka. Peza thandizo la dokotala ngati kupweteka kuli kwakukulu, kukufalikira kapena munthuyo sakumva bwino.

Nthawi zonse yamba wayimbira nambala yadzidzidzi (112, 000, 911). Awa ndi malangizo wamba a chithandizo choyamba, osati malangizo a dokotala. Zoyambira za chithandizo choyamba

Khala wotetezeka

  • Usakhudze, kugwira kapena kuseweretsa nyama yakuthengo, ngakhale yaing'ono, ndipo ngakhale ikuoneka ngati yagona kapena yafa.
  • Ipatse malo. Ukakumana nayo, khala chete, bwerera m'mbuyo pang'onopang'ono ndipo uilole ipite njira yake.
  • Ikakuluma: khala chete, usasunthe, imbira nambala yadzidzidzi (112, 000, 911) kapena pita kuchipatala mwachangu. Kumbukira m'mene inkaonekera, chithunzi chimathandiza.

Sikufuna kukuvulaza. Imagwiritsa ntchito ululu wake kugwira chakudya kapena kudziteteza, ndipo imakonda kwambiri kubisala. Zambiri za kukhala wotetezeka

Kuti padziko lapansi?

AfricaAsiaUlayaAmereka ya KumpotoAmereka ya KumweraAustralia ndi Oceania

Ndi yaikulu bwanji?

Ndi yaitali bwanji?

Western black widow yaitali pafupifupi 1,6 cm (0,6 in)Njere ya mpunga pafupifupi 7 mm (0,3 in)Ndalama yachitsulo ya 1 euro pafupifupi 2,3 cm (0,9 in)
yaifupi kuposa chala chako chaching'ono

Western black widow ndi yaikulu bwanji poyerekeza ndi IWE?

Ndi masamu chabe mu msakatuli wako. Palibe chomwe chimasungidwa kapena kutumizidwa kwina.

Imathamanga bwanji?

zoyenera kudziwa

Mfundo

1

When prey hits a gumfoot thread, the thread breaks and creates tension that pulls the line and prey up to the spider.1

2

This spider is an opportunistic cannibal, and it may eat other members of its own kind when prey is scarce, when it is very hungry, or in self-defence.1

3

The silk is strongly sticky, and its strength is similar to that of silk from orb-weaving spiders.1

4

Males can be preferred by females based on the webs, with well-fed females chosen over starved ones.1

5

Males may mate several times during their relatively short lives.1

Kuthetsa nthano zabodza

Nthano yabodza: A black widow bite is usually deadly.

Zoona: Recent studies have not confirmed any deaths from the U.S. species of Latrodectus, including zero deaths among 23,409 documented bites from 2000 through 2008.1

Za akatswiri a ululu

Dzina la sayansi
Latrodectus hesperus
Gulu
Akangaude
Banja
Theridiidae2
Dongosolo
Araneae
Makontinenti
Amereka ya Kumpoto
Ana akhanda
Females produce egg sacs, and the young are born in the months from May to October.1
Ngozi kwa anthu
3 / 5: Yoopsa3

Kumene mfundo zimachokera

  1. Latrodectus hesperus (Wikipedia (CC BY-SA 4.0))
  2. Latrodectus hesperus (iNaturalist): mayina ndi magulu a sayansi.
  3. Venom Wiki: mlingo wa ngozi, kukula wamba ndi kuyerekeza kwa liwiro ndi zathu. Ona mmene timazipezera: Mmene timayezera ngozi.

Mfundo iliyonse patsamba lino ili ndi nambala yosonyeza kochokera. Ngati talakwitsa, pepani, ndife okonda nyama, osati magazini a sayansi. Tiuze pa [email protected] ndipo tikonza.

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