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Western black widow

Latrodectus hesperus

Bisaba mugangaNi gake yica, ariko kurumwa na yo bisaba kujya kwa muganga.

Ibitagangurirwa

IrarumaIrya: Inyama

Akaga ku bantu: IkomeyeKurumwa na yo bisaba kujya kwa muganga. Abapfa ni bake cyane.

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

Iba muri

Western North America: south-western Canada (British Columbia to Manitoba), the Pacific Coast, Texas, Oklahoma, Kansas, and Mexico1

Amerika y'Amajyaruguru

Ahabanza

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

Uburebure

1,4 cm kugeza kuri 1,6 cm (0,6 in kugeza kuri 0,6 in)1

Umuvuduko wo hejuru

hafi 0,98 km/h (0,61 mph)

Ku butaka, ikigereranyo cy'ugereranyije

Irya iki?

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

Ifoto ya Western black widow — Western black widow. Ifoto: Luke Padon. CC BY 4.0, iNaturalist.

Uko wayimenya

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

Ikunze kwitiranywa na: It was once described as a subspecies of Latrodectus mactans and is closely related to the northern species Latrodectus variolus.1

Imbaraga z'ubumara

Iraruma

Ubumara busohokera mu menyo yayo y'ubumara cyangwa mu yandi menyo iyo iriye.

Ubumara bwayo bukora iki?

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

Iteje akaga kangana iki ku bantu?

Akaga ku bantu: IkomeyeKurumwa na yo bisaba kujya kwa muganga. Abapfa ni bake cyane.

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

Ikora iki iyo ifite ubwoba?

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

Niba iruma

Oza aho yarumye kandi uhashyire agapaki k'urubura kubera ububabare. Shaka ubufasha bwa muganga niba ububabare bukabije, bukwirakwira cyangwa umuntu yumva atameze neza.

Buri gihe banza uhamagare nimero y'ubutabazi (112, 000, 911). Izi ni inama rusange z'ubutabazi bw'ibanze, si inama za muganga. Ibanze by'ubutabazi bw'ibanze

Irinde akaga

Ntuzigere ukora, ufata cyangwa ushotora inyamaswa yo mu gasozi, nubwo yaba ntoya, kandi nubwo yasa n'isinziriye cyangwa yapfuye.
Yihe umwanya. Niba uhuye n'imwe, tuza, usubire inyuma buhoro buhoro kandi uyireke yigendere.
Niba imwe ikurumye: tuza, ntunyeganyege, hamagara nimero y'ubutabazi (112, 000, 911) cyangwa ujye ku bitaro vuba. Ibuka uko yasaga, ifoto irafasha.

Ntigushakisha ngo ikugirire nabi. Ikoresha ubumara bwayo kugira ngo ifate ibyo kurya cyangwa yirinde, kandi ikunda cyane kwihisha. Ibindi ku kwirinda

Ni hehe ku isi?

Afurika Aziya Uburayi Amerika y'Amajyaruguru Amerika y'Amajyepfo Ositaraliya na Oseyaniya

Ingana gute?

Ireshya ite?

ngufi kurusha agahera kawe

Western black widow ingana ite ugereranyije NAWE?

Ni imibare gusa ikorerwa muri mudasobwa yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihuta gute?

Akanyamasyo hafi 0,3 km/h (0,19 mph)

Western black widow hafi 0,98 km/h (0,61 mph)

Umuntu ugenda n'amaguru hafi 5 km/h (3,1 mph)

bikwiye kumenywa

Ibintu by'ukuri

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

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

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

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

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

Usenya ibinyoma

Ikinyoma: A black widow bite is usually deadly.

Ukuri: 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

Ku bahanga mu by'ubumara

Izina rya siyansi: Latrodectus hesperus
Itsinda: Ibitagangurirwa
Umuryango: Theridiidae2
Itsinda rinini (order): Araneae
Imigabane: Amerika y'Amajyaruguru
Abana bato: Females produce egg sacs, and the young are born in the months from May to October.1
Akaga ku bantu: 3 / 5: Ikomeye3

Aho ibintu bivugwa bituruka

Latrodectus hesperus (Wikipedia (CC BY-SA 4.0))
Latrodectus hesperus (iNaturalist): amazina n'ibyiciro.
Venom Wiki: urwego rw'akaga, ingano isanzwe n'ikigereranyo cy'umuvuduko ni ibyacu bwite. Reba uko tubibara: Uko tugena akaga.

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