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No. 0630 kuri 1 402

Southern black widow

Latrodectus mactans

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 southern black widow is a venomous spider that lives in North America. Mature females are shiny black with a red hourglass mark on their underside. Its bite can cause pain and other symptoms, but it is rarely fatal to healthy people.1

Iba muri

Native to North America, mainly the southeastern United States. Also found in Mexico and the Dominican Republic, and established in Hawaii (USA).1

Amerika y'Amajyaruguru

Ahabanza

It builds tangled, three-dimensional cobwebs and waits in a retreat near them. One way it has reached Hawaii is through imported produce.1

Uburebure

8 mm kugeza kuri 1,3 cm (0,3 in kugeza kuri 0,5 in)1

Umuvuduko wo hejuru

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

Ku butaka, ikigereranyo cy'ugereranyije

Irya iki?

It eats a variety of insects, and also woodlice, millipedes, centipedes and other spiders. When prey is caught in its web, it rushes out, wraps the prey tightly in silk, and bites it. It then releases digestive enzymes into the wound and carries the prey back to its retreat to feed.1

Ifoto ya Southern black widow — Southern black widow. Ifoto: unknown. CC BY 2.0, Wikimedia Commons.

Uko wayimenya

Mature females are shiny black, with a red hourglass-shaped mark on the underside of a very rounded abdomen.1
Many females have an orange or red patch on the top of the abdomen, just above the spinnerets.1
Mature females have a body length of 8–13 mm, not counting the legs. Males are 3–6 mm.1
Juveniles look very different. They have a grey to black abdomen with white stripes across it, spotted with yellow and orange.1
Males are either purple, or look more like the juveniles.1

Ikunze kwitiranywa na: It is often confused with the false widows (genus Steatoda) and with the closely related northern (L. variolus) and western (L. hesperus) black widows.1

Imbaraga z'ubumara

Iraruma

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

Ubumara bwayo bukora iki?

The venom contains alpha-latrotoxin, a neurotoxic venom that attacks the nerves. It causes pain and other symptoms, which are collectively called latrodectism.1

Iteje akaga kangana iki ku bantu?

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

Deaths in healthy adults are exceedingly rare. No deaths were reported among 23,409 documented Latrodectus bites in the US from 2000 to 2008, though about 2,000 bites happen each year. Only mature females can bite people.1

Inkuru nziza: abaganga bafite umuti (umuti urwanya ubumara, antivenom) cyangwa uburyo bwo kuvura ibi.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?

ntoya ku buryo yakwicara ku nzara yawe

Southern 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)

Southern 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

In 1933, Allan Blair let himself be bitten by one of these spiders to study its venom in humans and to convince sceptics that it could be dangerous.1

Females will occasionally eat their mates after reproduction.1

Only mature females can bite people. Their hollow, needle-like mouthparts are about 1 mm long, which is long enough to inject venom into people.1

The brown widow (Latrodectus geometricus) competes with black widows for territory. In areas where they share space, it can displace them.1

Males live only about three to four months, while females can live for up to three years.1

Usenya ibinyoma

Ikinyoma: A black widow bite is usually fatal.

Ukuri: Black widow bites are rarely fatal to healthy people. No deaths from the US species were reported among 23,409 documented bites from 2000 to 2008.1

Ku bahanga mu by'ubumara

Izina rya siyansi: Latrodectus mactans
Itsinda: Ibitagangurirwa
Umuryango: Theridiidae2
Itsinda rinini (order): Araneae
Imigabane: Amerika y'Amajyaruguru
Abana bato: A female can produce four to nine egg sacs in one summer, each holding about 100–400 eggs, which she guards in a silken container.1
Igihe ibaho: hafi imyaka 31
Akaga ku bantu: 3 / 5: Ikomeye3

Aho ibintu bivugwa bituruka

Latrodectus mactans (Wikipedia (CC BY-SA 4.0))
Latrodectus mactans (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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