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Brown recluse

Loxosceles reclusa

ກ່ຽວກັບຊື່: The scientific name reclusa means 'recluse', which refers to the spider's shy, hidden way of life.1

ຕ້ອງໄປຫາໝໍບໍ່ຄ່ອຍເຖິງຕາຍ, ແຕ່ຖ້າຖືກມັນກັດ ຕ້ອງໄປຫາໝໍ

ແມງມຸມ

ກັດກິນ: ຊີ້ນ

ອັນຕະລາຍຕໍ່ຄົນ: ຮ້າຍແຮງຖ້າຖືກມັນກັດ ຕ້ອງໄປຫາໝໍ ການເສຍຊີວິດເກີດຂຶ້ນໜ້ອຍຫຼາຍ

The brown recluse is a small spider with a violin-shaped mark on its back. It lives mainly in the central and southern United States, where it hides in dark, quiet places such as woodpiles and sheds. It is one of only two North American spiders with dangerous venom, the other being the black widow.1

ອາໄສຢູ່ໃນ

Southern and central United States, from southeastern Nebraska south to central Texas and western Georgia1

ອາເມລິກາເໜືອ

ໜ້າຫຼັກ

Brown recluses build irregular webs in dry, undisturbed places such as woodpiles, sheds, closets, garages, plenum spaces and cellars. In homes they seem to favour cardboard. People are usually bitten when the spider is trapped against the skin, for example inside clothes, shoes, towels, bedding or work gloves.1

ຄວາມຍາວ

6 mm ຫາ 2 cm (0,2 in ຫາ 0,8 in)1

ຄວາມໄວສູງສຸດ

ປະມານ 0,8 ກມ/ຊມ (0,5 ໄມລ໌/ຊມ)

ເທິງບົກ, ການຄາດຄະເນຄ່າວໆ

ມັນກິນຫຍັງ?

Brown recluses leave their lairs at night to hunt, unlike most web-weaving spiders. If food becomes scarce, they will occasionally, though not habitually, eat other brown recluses.1

ຮູບຂອງ Brown recluse — Brown recluse ຮູບ: Rosa Pineda CC BY-SA 3.0, Wikimedia Commons.

ວິທີສັງເກດມັນ

A dark violin-shaped marking on the top of the front body, with the neck of the violin pointing towards the rear of the spider1
Typically light to medium brown, though colours range from whitish to dark brown or blackish grey1
Six eyes arranged in three pairs, while most spiders have eight1
No obvious patterns on the abdomen or legs, and no spines on the legs1
Usually 6 to 20 millimetres in body length, but may grow larger1

ມັກສັບສົນກັບ: The violin marking is not a reliable identifier, because cellar spiders and pirate spiders can have similar markings. The Mediterranean recluse, an introduced species, is almost indistinguishable from the brown recluse, so many reports of recluses are misidentifications. A spider in the genus Titiotus is the most common spider mistaken for a brown recluse in California, and its bite is considered harmless.1

ພະລັງພິດ

ກັດ

ພິດອອກມາທາງເຂ້ຍ ຫຼື ແຂ້ວຂອງມັນ ເວລາມັນກັດ

ພິດທີ່ມັນປ່ອຍອອກມາເຮັດຫຍັງ?

The venom is necrotic, meaning it destroys tissue. It contains a dermonecrotic agent called sphingomyelinase D, which kills the skin around the bite. In some cases the venom spreads through the body within minutes, causing nausea, vomiting, fever, rashes and muscle and joint pain. Rarely, it can burst red blood cells (hemolysis).1

ມັນອັນຕະລາຍຕໍ່ຄົນປານໃດ?

Most bites cause no skin damage, and the spider is rarely aggressive. In one clinical study, skin necrosis occurred in 37% of diagnosed bites and systemic illness in 14%. Rarely, bites can cause organ damage or death. Most fatalities have been in children under seven or in people with weak immune systems. Children, the elderly and seriously ill people may be more susceptible to systemic effects.1

ມັນເຮັດແນວໃດເວລາມັນຢ້ານ?

When alarmed, it lowers its body, raises its pedipalps and stands still in a defensive pose. It usually flees, and if caught it may play dead.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

ຢູ່ໃສໃນໂລກ?

ອາຟຣິກາ ອາຊີ ເອີຣົບ ອາເມລິກາເໜືອ ອາເມລິກາໃຕ້ອົດສະຕຣາລີ ແລະ ໂອເຊຍເນຍ

ມັນໃຫຍ່ປານໃດ?

ມັນຍາວປານໃດ?

ຍາວປະມານຄລິບໜີບເຈ້ຍອັນໜຶ່ງ

Brown recluse ໃຫຍ່ປານໃດ ເມື່ອທຽບກັບເຈົ້າ?

ພຽງແຕ່ຄິດໄລ່ໃນບຣາວເຊີຂອງເຈົ້າ ບໍ່ມີຫຍັງຖືກບັນທຶກ ຫຼື ສົ່ງໄປບ່ອນໃດ

ມັນໄວປານໃດ?

ເຕົ່າບົກ ປະມານ 0,3 ກມ/ຊມ (0,19 mph)

Brown recluse ປະມານ 0,8 ກມ/ຊມ (0,5 mph)

ຄົນຍ່າງ ປະມານ 5 ກມ/ຊມ (3,1 mph)

ຄວນຮູ້

ຂໍ້ມູນ

One brown recluse survived for over five seasons in captivity without any food at all.1

In 2001, more than 2,000 brown recluses were removed from a heavily infested home in Kansas, yet the four residents who had lived there for years were never harmed.1

When a leg is lost, the brown recluse does not grow a new one in later moults, unlike the huntsman spider.1

Brown recluses do not balloon, which limits how far they can spread across the landscape.1

Males move around more when hunting than females, which tend to stay near their webs.1

ນັກລົບລ້າງຄວາມເຊື່ອຜິດໆ

ຄວາມເຊື່ອຜິດໆ: Brown recluses are common in California and the western United States, where they cause many bites.

ຄວາມຈິງ: The brown recluse has not established itself in California or anywhere outside its native range. Many reported bites there are misdiagnosed, and other spiders are often wrongly identified as brown recluses.1

ສຳລັບຜູ້ຊ່ຽວຊານດ້ານພິດ

ຊື່ວິທະຍາສາດ: Loxosceles reclusa
ກຸ່ມ: ແມງມຸມ
ຄອບຄົວ: Sicariidae2
ອັນດັບ: Araneae
ທະວີບຕ່າງໆ: ອາເມລິກາເໜືອ
ລູກສັດ: Each female produces several egg sacs between May and July, with about 50 eggs in each sac. The eggs hatch in about one month, and the young take about a year to reach adulthood.1
ອັນຕະລາຍຕໍ່ຄົນ: 3 / 5: ຮ້າຍແຮງ3

ຂໍ້ມູນມາຈາກໃສ

Brown recluse spider (Wikipedia (CC BY-SA 4.0))
Loxosceles reclusa (iNaturalist): ຊື່ ແລະ ການຈັດໝວດໝູ່
Venom Wiki: ລະດັບອັນຕະລາຍ, ຂະໜາດທົ່ວໄປ ແລະ ຄວາມໄວທີ່ຄາດຄະເນ ແມ່ນຂອງພວກເຮົາເອງ ເບິ່ງວ່າພວກເຮົາຄິດໄລ່ແນວໃດ: ພວກເຮົາໃຫ້ຄະແນນອັນຕະລາຍແນວໃດ.

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