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Brown recluse
MordeThe 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
Como recoñecelo
- 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
Adoita confundirse con: 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
Poder da pezoña
A pezoña sae polos seus cairos ou dentes cando morde.
Que fai a súa pezoña?
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
Que perigoso é para as persoas?
Perigo para as persoas: GraveUnha mordedura precisa un médico. As mortes son moi raras.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
Que fai cando ten medo?
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
Se morde
- Lava a mordedura e ponlle unha bolsa de xeo para a dor. Busca axuda médica se a dor é forte, se se estende ou se a persoa se sente mal.
Chama sempre primeiro ao teu número de emerxencias (112, 000, 911). Isto son consellos xerais de primeiros auxilios, non consello médico. Primeiros auxilios básicos
Mantente a salvo
- Nunca toques, collas nin molestes un animal salvaxe, aínda que sexa pequeno e aínda que pareza durmido ou morto.
- Déixalle espazo. Se atopas un, mantén a calma, recúa amodo e déixao ir polo seu camiño.
- Se un te morde: mantén a calma, non te movas, chama ao teu número de emerxencias (112, 000, 911) ou vai rápido a un hospital. Lembra como era, unha foto axuda.
Non vai a por ti. Usa a súa pezoña para cazar comida ou para defenderse, e prefire con moito agocharse. Máis sobre como estar a salvo
En que lugar do mundo?
Que tamaño ten?
Canto mide?
mide máis ou menos coma un clipQue tamaño ten Brown recluse comparado CONTIGO?
Só son contas no teu navegador. Non se garda nin se envía nada a ningures.
Que rápido é?
Datos
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
Desmontamitos
Mito: Brown recluses are common in California and the western United States, where they cause many bites.
Verdade: 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
Para expertos en pezoñas
- Nome científico
- Loxosceles reclusa
- Grupo
- Arañas
- Familia
- Sicariidae2
- Orde
- Araneae
- Continentes
- América do Norte
- Crías
- 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
- Perigo para as persoas
- 3 / 5: Grave3
De onde veñen os datos
- Brown recluse spider (Wikipedia (CC BY-SA 4.0))
- Loxosceles reclusa (iNaturalist): nomes e clasificación.
- Venom Wiki: o nivel de perigo, o tamaño típico e a velocidade estimada son nosos. Mira como os calculamos: Como valoramos o perigo.
Cada dato desta páxina ten un número que leva á súa fonte. Se nos equivocamos nalgo, sentímolo, somos fans dos animais, non unha revista científica. Dínolo en [email protected] e arranxarémolo.
O escorpión ten fame! Venom Wiki é un proxecto dunha soa persoa: gratis, sen anuncios e sen rastrexadores. Unha pequena propina axuda a mantelo en liña.Dálle de comer ao escorpión
Southern black widow
Northern black widow
Western black widow
Bold jumping spider
Golden silk orb-weaver
Central American wandering spider
Terciopelo
Eastern coral snake
Eastern diamondback rattlesnake
Eyelash viper
Timber rattlesnake
Western diamondback rattlesnake