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Southern black widow

Latrodectus mactans

Kufuna ugqirhaKunqabile ukuba sibulale, kodwa ukulunywa kufuna ugqirha.

Izigcawu

UkulumaSitya: Inyama

Ingozi ebantwini: Kubi kakhuluUkulunywa kufuna ugqirha. Ukufa kunqabe kakhulu.

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

Sihlala

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

uMntla Melika

Ekhaya

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

Ubude

8 mm ukuya ku-1,3 cm (0,3 in ukuya ku-0,5 in)1

Esona santya siphezulu

malunga ne-0,98 km/h (0,61 mph)

Emhlabeni, uqikelelo nje

Sitya ntoni?

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

Indlela yokusiqaphela

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

Sidla ngokubhidaniswa no: 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

Amandla etyhefu yokuluma nokuhlaba

Ukuluma

Ityhefu iphuma ngamazinyo aso etyhefu okanye ngamazinyo aso xa siluma.

Ityhefu yaso yokuluma okanye yokuhlaba yenza ntoni?

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

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: Kubi kakhuluUkulunywa kufuna ugqirha. Ukufa kunqabe kakhulu.

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

Iindaba ezimnandi: oogqirha banamayeza (i-antivenom) okanye unyango lwale nto.1

Ukuba siyaluma

Hlamba indawo elunyiweyo uze ubeke ipakethi yomkhenkce kuyo ngenxa yeentlungu. Fumana uncedo lwezonyango ukuba iintlungu zinamandla, ziyasasazeka okanye umntu uziva engaphilanga kakuhle.

Soloko utsalela inombolo kaxakeka kuqala (112, 000, 911). Esi sisikhokelo soncedo lokuqala ngokubanzi, asilocebiso lwezonyango. Iziseko zoncedo lokuqala

Hlala ukhuselekile

Ungaze uchukumise, ubambe okanye uqhule isilwanyana sasendle, nokuba sincinci, kwaye nokuba sibonakala silele okanye sifile.
Sinike indawo. Ukuba udibana naso, hlala uzolile, buyela umva kancinci kwaye usiyeke sihambe ngendlela yaso.
Ukuba siyakuluma: hlala uzolile, musa ukushukuma, tsalela inombolo kaxakeka (112, 000, 911) okanye uye esibhedlele ngokukhawuleza. Khumbula ukuba sasikhangeleka njani, ifoto iyanceda.

Asikuzingeli. Sisebenzisa ityhefu yaso ukubamba ukutya okanye ukuzikhusela, kwaye singakhetha ukuzimela. Okungakumbi malunga nokuhlala ukhuselekile

Phi emhlabeni?

IAfrika IAsiya IYurophu uMntla Melika uMzantsi Melika IOstreliya neOceania

Sikhulu kangakanani?

Side kangakanani?

sincinci kangangokuba singahlala eluzipheni lwakho

U-Southern black widow mkhulu kangakanani xa uthelekisa NAWE?

Zizibalo nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwa naphi na.

Sikhawuleza kangakanani?

Ufudo malunga ne-0,3 km/h (0,19 mph)

Southern black widow malunga ne-0,98 km/h (0,61 mph)

Umntu ohambayo malunga ne-5 km/h (3,1 mph)

kufanelekile ukwazi

Iinyaniso

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

Umqhekezi weentsomi

Intsomi: A black widow bite is usually fatal.

Inyaniso: 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

Kwiingcali zetyhefu

Igama lenzululwazi: Latrodectus mactans
Iqela: Izigcawu
Usapho: Theridiidae2
Ucwangco: Araneae
Amazwekazi: uMntla Melika
Iintsana: 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
Ixesha lobomi: malunga neminyaka eyi-31
Ingozi ebantwini: 3 / 5: Kubi kakhulu3

Apho iinyaniso zivela khona

Latrodectus mactans (Wikipedia (CC BY-SA 4.0))
Latrodectus mactans (iNaturalist): amagama nokuhlelwa.
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