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

ວິທີສັງເກດມັນ
- 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
ມັກສັບສົນກັບ: It was once described as a subspecies of Latrodectus mactans and is closely related to the northern species Latrodectus variolus.1
ພະລັງພິດ
ພິດອອກມາທາງເຂ້ຍ ຫຼື ແຂ້ວຂອງມັນ ເວລາມັນກັດ
ພິດທີ່ມັນປ່ອຍອອກມາເຮັດຫຍັງ?
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
ມັນອັນຕະລາຍຕໍ່ຄົນປານໃດ?
ອັນຕະລາຍຕໍ່ຄົນ: ຮ້າຍແຮງຖ້າຖືກມັນກັດ ຕ້ອງໄປຫາໝໍ ການເສຍຊີວິດເກີດຂຶ້ນໜ້ອຍຫຼາຍHistorical 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
ມັນເຮັດແນວໃດເວລາມັນຢ້ານ?
Juveniles and females can fling a sticky ball of silk at predators, which can stop most of them.1
ຖ້າມັນກັດ
- ລ້າງບ່ອນຖືກກັດ ແລະ ປະຄົບດ້ວຍຖົງນ້ຳກ້ອນເພື່ອບັນເທົາຄວາມເຈັບ ໄປຫາໝໍຖ້າເຈັບຫຼາຍ, ຄວາມເຈັບລາມອອກໄປ ຫຼື ຜູ້ປ່ວຍຮູ້ສຶກບໍ່ສະບາຍ
ໂທຫາເບີສຸກເສີນກ່ອນສະເໝີ (112, 000, 911) ນີ້ແມ່ນຄຳແນະນຳການປະຖົມພະຍາບານທົ່ວໄປ, ບໍ່ແມ່ນຄຳແນະນຳທາງການແພດ ພື້ນຖານການປະຖົມພະຍາບານ
ຢູ່ຢ່າງປອດໄພ
- ຢ່າຈັບ, ຢ່າຈັບເອົາ ຫຼື ຢ່າຫຍອກສັດປ່າເດັດຂາດ, ເຖິງແມ່ນມັນໂຕນ້ອຍ ແລະ ເຖິງແມ່ນມັນເບິ່ງຄືນອນຫຼັບ ຫຼື ຕາຍແລ້ວ
- ໃຫ້ພື້ນທີ່ມັນ ຖ້າເຈົ້າພົບມັນ, ໃຈເຢັນໄວ້, ຖອຍຫຼັງຊ້າໆ ແລະ ປ່ອຍໃຫ້ມັນໄປທາງຂອງມັນ
- ຖ້າມີໂຕໃດກັດເຈົ້າ: ໃຈເຢັນໄວ້, ຢູ່ນິ້ງໆ, ໂທຫາເບີສຸກເສີນ (112, 000, 911) ຫຼື ໄປໂຮງໝໍໃຫ້ໄວ ຈື່ໄວ້ວ່າມັນມີລັກສະນະແນວໃດ, ຮູບຖ່າຍຊ່ວຍໄດ້
ມັນບໍ່ໄດ້ຢາກທຳຮ້າຍເຈົ້າ ມັນໃຊ້ພິດເພື່ອຈັບອາຫານ ຫຼື ເພື່ອປ້ອງກັນຕົວ, ແລະ ມັນມັກລີ້ຫຼາຍກວ່າ ເພີ່ມເຕີມກ່ຽວກັບການຢູ່ຢ່າງປອດໄພ
ມັນໃຫຍ່ປານໃດ?
ມັນຍາວປານໃດ?
ສັ້ນກວ່ານິ້ວກ້ອຍຂອງເຈົ້າWestern black widow ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?
ພຽງແຕ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປບ່ອນໃດ
ມັນໄວປານໃດ?
ຂໍ້ມູນ
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
ນັກລົບລ້າງຄວາມເຊື່ອຜິດໆ
ຄວາມເຊື່ອຜິດໆ: A black widow bite is usually deadly.
ຄວາມຈິງ: 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
ຂໍ້ມູນມາຈາກໃສ
- Latrodectus hesperus (Wikipedia (CC BY-SA 4.0))
- Latrodectus hesperus (iNaturalist): ຊື່ ແລະ ການຈັດໝວດໝູ່
- Venom Wiki: ລະດັບອັນຕະລາຍ, ຂະໜາດທົ່ວໄປ ແລະ ຄວາມໄວທີ່ຄາດຄະເນ ແມ່ນຂອງພວກເຮົາເອງ ເບິ່ງວ່າພວກເຮົາຄິດໄລ່ແນວໃດ: ພວກເຮົາໃຫ້ຄະແນນອັນຕະລາຍແນວໃດ.
ທຸກຂໍ້ມູນໃນໜ້ານີ້ມີຕົວເລກທີ່ຊີ້ໄປຫາແຫຼ່ງທີ່ມາ ຖ້າພວກເຮົາຜິດພາດ, ຂໍໂທດເດີ້, ພວກເຮົາເປັນຄົນມັກສັດ ບໍ່ແມ່ນວາລະສານວິທະຍາສາດ ບອກພວກເຮົາທີ່ [email protected] ແລ້ວພວກເຮົາຈະແກ້ໄຂ
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