Nọ́. 0631 nínú 1 402

Western black widow

Latrodectus hesperus

Ó nílò dókítàKì í sábà pani, ṣùgbọ́n ìbùjẹ nílò dókítà.

ÌbùjẹOúnjẹ rẹ̀: Ẹran

Ewu fún ènìyàn: Ó le gan-anÌbùjẹ nílò dókítà. Ikú kò wọ́pọ̀ rárá.

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

Ó ń gbé ní

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

Àríwá Amẹ́ríkà

Ilé

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

Gígùn

1.4 cm sí 1.6 cm (0.6 in sí 0.6 in)1

Ìyára gíga jùlọ

nǹkan bí 0.98 km/h (0.61 mph)

Lórí ilẹ̀, àfojúbù

Kí ni ó máa ń jẹ?

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

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

Bí o ṣe lè dá a mọ̀

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

A sábà máa ń ṣì í mọ̀ sí: It was once described as a subspecies of Latrodectus mactans and is closely related to the northern species Latrodectus variolus.1

Agbára oró

Ìbùjẹ

Oró ń jáde láti inú eyín oró tàbí eyín rẹ̀ nígbà tí ó bá bùjẹ.

Kí ni oró rẹ̀ máa ń ṣe?

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

Báwo ló ṣe léwu tó fún ènìyàn?

Ewu fún ènìyàn: Ó le gan-anÌbùjẹ nílò dókítà. Ikú kò wọ́pọ̀ rárá.

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

Kí ni ó máa ń ṣe nígbà tí ẹ̀rù bá bà á?

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

Bí ó bá bùjẹ

Fọ ibi ìbùjẹ náà kí o sì fi àpò yìnyín lé e fún ìrora. Wá ìrànlọ́wọ́ ìṣègùn bí ìrora bá le, tí ó ń tàn kálẹ̀, tàbí tí ara ẹni náà kò bá yá.

Máa kọ́kọ́ pe nọ́ńbà pàjáwìrì rẹ nígbà gbogbo (112, 000, 911). Èyí jẹ́ ìtọ́sọ́nà ìtọ́jú àkọ́kọ́ gbogbogbò, kì í ṣe ìmọ̀ràn ìṣègùn. Ìpìlẹ̀ ìtọ́jú àkọ́kọ́

Wà láìléwu

Má ṣe fọwọ́ kan, mú tàbí yọ ẹranko igbó lẹ́nu láéláé, kódà bí ó bá kéré, kódà bí ó bá dà bí ẹni pé ó ń sùn tàbí ó ti kú.
Fún un ní àyè. Bí o bá pàdé ọ̀kan, farabalẹ̀, sẹ́yìn díẹ̀díẹ̀ kí o sì jẹ́ kí ó máa bá ọ̀nà rẹ̀ lọ.
Bí ọ̀kan bá bù ọ́ jẹ: farabalẹ̀, má ṣe mira, pe nọ́ńbà pàjáwìrì rẹ (112, 000, 911) tàbí lọ sí ilé ìwòsàn kíákíá. Rántí bí ó ṣe rí, fọ́tò máa ń ṣèrànwọ́.

Kò wá ọ kiri láti ṣe ọ́ léṣe. Ó ń lo oró rẹ̀ láti mú oúnjẹ tàbí láti dáàbò bo ara rẹ̀, ó sì fẹ́ràn láti farapamọ́ jù. Sí i nípa wíwà láìléwu

Níbo ní ayé?

Áfíríkà Éṣíà Yúróòpù Àríwá Amẹ́ríkà Gúúsù Amẹ́ríkà Ọsirélíà àti Òṣéáníà

Báwo ló ṣe tóbi tó?

Báwo ló ṣe gùn tó?

ó kúrú ju ọmọdínrín ìka rẹ lọ

Báwo ni Western black widow ṣe tóbi tó tí a bá fi wé ÌWỌ?

Ìṣirò nìkan nínú bráwúsà rẹ. A kò fi ohunkóhun pamọ́, a kò sì fi ránṣẹ́ sí ibikíbi.

Báwo ló ṣe yára tó?

Ìjàpá kan nǹkan bí 0.3 km/h (0.19 mph)

Western black widow nǹkan bí 0.98 km/h (0.61 mph)

Ènìyàn tó ń rìn nǹkan bí 5 km/h (3.1 mph)

ó yẹ ní mímọ̀

Òtítọ́

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

Olùfọ́ àròsọ

Àròsọ: A black widow bite is usually deadly.

Òtítọ́: 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

Fún àwọn amòye oró

Orúkọ sáyẹ́ǹsì: Latrodectus hesperus
Ẹgbẹ́: Alántakùn
Ìdílé: Theridiidae2
Ètò: Araneae
Àwọn kọ́ńtínẹ́ńtì: Àríwá Amẹ́ríkà
Àwọn ọmọ: Females produce egg sacs, and the young are born in the months from May to October.1
Ewu fún ènìyàn: 3 / 5: Ó le gan-an3

Ibi tí àwọn òtítọ́ ti wá

Latrodectus hesperus (Wikipedia (CC BY-SA 4.0))
Latrodectus hesperus (iNaturalist): orúkọ àti ìpínsísọ̀rí.
Venom Wiki: ìpele ewu, ìtóbi déédé àti àfojúbù ìyára jẹ́ tiwa. Wo bí a ṣe ń ṣírò wọn: Bí a ṣe ń díwọ̀n ewu.

Gbogbo òtítọ́ ojú-ìwé yìí ní nọ́ńbà tó tọ́ka sí orísun rẹ̀. Bí a bá ṣe àṣìṣe, má bínú, olólùfẹ́ ẹranko ni wá, kì í ṣe ìwé ìròyìn sáyẹ́ǹsì. Sọ fún wa ní [email protected] a ó sì tún un ṣe.

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