Western black widow
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

Paano ito makikilala
- 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
Madalas mapagkamalang: It was once described as a subspecies of Latrodectus mactans and is closely related to the northern species Latrodectus variolus.1
Lakas ng kamandag
Lumalabas ang kamandag sa pangil o ngipin nito kapag nangangagat ito.
Ano ang epekto ng kamandag nito?
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
Gaano ito kapanganib sa tao?
Panganib sa tao: MalalaKailangang magpatingin sa doktor kapag nakagat. Napakabihira ng namamatay.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
Ano ang ginagawa nito kapag natatakot?
Juveniles and females can fling a sticky ball of silk at predators, which can stop most of them.1
Kung kumagat ito
- Hugasan ang kagat at lagyan ng ice pack para sa sakit. Kumuha ng tulong medikal kung matindi ang sakit, kumakalat, o masama ang pakiramdam ng tao.
Laging tawagan muna ang numero pang-emergency (112, 000, 911). Ito ay pangkalahatang gabay sa pangunang lunas, hindi payong medikal. Mga batayan ng pangunang lunas
Mag-ingat
- Huwag kailanman hawakan, hulihin o asarin ang ligaw na hayop, kahit maliit, at kahit mukha itong tulog o patay.
- Bigyan ito ng espasyo. Kung makasalubong ka ng isa, manatiling kalmado, dahan-dahang umatras at hayaan itong umalis.
- Kung kagatin ka ng isa: manatiling kalmado, huwag gumalaw, tawagan ang numero pang-emergency (112, 000, 911) o pumunta agad sa ospital. Tandaan ang itsura nito, makakatulong ang litrato.
Hindi ka nito hinahabol. Ginagamit nito ang kamandag para manghuli ng pagkain o ipagtanggol ang sarili, at mas gusto pa nitong magtago. Higit pa tungkol sa pag-iingat
Gaano ito kalaki?
Gaano ito kahaba?
mas maikli kaysa sa hinliliit moGaano kalaki si Western black widow kumpara sa IYO?
Math lang sa browser mo. Walang sine-save o ipinapadala kahit saan.
Gaano ito kabilis?
Mga fact
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
Myth buster
Mito: A black widow bite is usually deadly.
Totoo: 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
Saan galing ang mga fact
- Latrodectus hesperus (Wikipedia (CC BY-SA 4.0))
- Latrodectus hesperus (iNaturalist): mga pangalan at klasipikasyon.
- Venom Wiki: sarili naming tantiya ang antas ng panganib, karaniwang laki at hula sa bilis. Tingnan kung paano namin ito kinukuwenta: Paano namin sinusukat ang panganib.
Bawat fact sa pahinang ito ay may numerong tumuturo sa pinagmulan nito. Kung may mali kami, pasensya na, mahilig lang kami sa hayop, hindi kami science journal. Sabihin sa amin sa [email protected] at aayusin namin.
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