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Brown recluse

Loxosceles reclusa
Davart il num: The scientific name reclusa means 'recluse', which refers to the spider's shy, hidden way of life.1
Dovra in mediDarar mortal, ma ina morsa sto vegnir tractada dad in medi.
Filiens MorsasMangia: Charn
Privel per umans: GravIna morsa sto vegnir tractada dad in medi. Cas da mort èn fitg rars.

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

Viva en
Southern and central United States, from southeastern Nebraska south to central Texas and western Georgia1
America dal Nord
Pagina iniziala
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
Lunghezza
6 mm fin 2 cm (0,2 in fin 0,8 in)1
Sveltezza maximala
circa 0,8 km/h (0,5 mph)
Sin terra, stima approximativa
Tge mangia el?
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
Propi!Foto da Brown recluse
Brown recluse. Foto: Rosa Pineda. CC BY-SA 3.0, Wikimedia Commons.

Co renconuscher el

  • 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

Savens confundì cun: 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

Forza dal tissi

Morsas

Il tissi vegn or tras ses dents da tissi u ses dents, cura ch'el morda.

Tge fa ses tissi?

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

Quant privlus è el per umans?

Privel per umans: GravIna morsa sto vegnir tractada dad in medi. Cas da mort èn fitg rars.

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

Tge fa el, cura ch'el ha tema?

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

Sch'el morda

  • Lava la morsa e metta in pachet da glatsch sin ella cunter las dolurs. Tschertga agid medicinal, sche las dolurs èn fermas, sa derasan u sche la persuna na sa senta betg bain.

Clama adina l'emprim tes numer d'urgenza (112, 000, 911). Quai è in cussegl general d'emprim agid, betg in cussegl medicinal. Basa da l'emprim agid

Resta en segirezza

  • Na tutga, na piglia e na tizza mai in animal selvadi, gnanc in pitschen, ed era sch'el para da durmir u d'esser mort.
  • Dà spazi a l'animal. Sche ti scuntras in, resta calm, va plaun enavos e lascha ir el per sia via.
  • Sch'in tal animal ta morda: resta calm, na ta mova betg, clama tes numer d'urgenza (112, 000, 911) u va spert en in ospital. Ta regorda co ch'el veseva or, ina foto gida.

El n'ha betg quai sin tai. El dovra ses tissi per pigliar nutriment u per sa defender, e sa zuppa bler pli gugent. Dapli davart la segirezza

Quant grond è el?

Quant lung è el?

Brown recluse circa 2 cm lung (0,8 in)In graun da ris circa 7 mm (0,3 in)Ina munaida d'1 euro circa 2,3 cm (0,9 in)
var uschè lung sco in clip da palpiri

Quant grond è Brown recluse cumpareglià cun TAI?

Mo matematica en tes navigatur. Nagut na vegn memorisà u tramess.

Quant svelt è el?

bun da savair

Fatgs

1

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

2

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

3

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

4

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

5

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

Destructur da mits

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

Vardad: 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

Per experts da tissi

Num scientific
Loxosceles reclusa
Gruppa
Filiens
Famiglia
Sicariidae2
Urden
Araneae
Continents
America dal Nord
Poppins
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
Privel per umans
3 / 5: Grav3

Da nua che vegnan ils fatgs

  1. Brown recluse spider (Wikipedia (CC BY-SA 4.0))
  2. Loxosceles reclusa (iNaturalist): nums e classificaziun.
  3. Venom Wiki: il stgalim da privel, la grondezza tipica e la stima da la sveltezza èn noss agens. Guarda co che nus als calculain: Co che nus valitain il privel.

Mintga fatg sin questa pagina ha in numer che renvia a sia funtauna. Sche nus avain fatg in sbagl, perstgisa, nus essan fans d'animals, betg ina revista scientifica. Scriva a nus a [email protected] e nus curregin.

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