Brown recluse
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

Kaip jį atpažinti
- 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
Dažnai painiojamas su: 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
Nuodų galia
Nuodai išeina per iltis ar dantis, kai jis įkanda.
Ką daro jo nuodai?
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
Koks jis pavojingas žmonėms?
Pavojus žmonėms: RimtasPo įkandimo reikia pas gydytoją. Mirties atvejai labai reti.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
Ką jis daro, kai išsigąsta?
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
Jei jis įkanda
- Nuplauk įkandimą ir nuo skausmo uždėk ledo maišelį. Kreipkis medicininės pagalbos, jei skausmas stiprus, plinta arba žmogus jaučiasi blogai.
Visada pirmiausia skambink pagalbos numeriu (112, 000, 911). Tai bendri pirmosios pagalbos patarimai, o ne medicininė konsultacija. Pirmosios pagalbos pagrindai
Būk saugus
- Niekada neliesk, negaudyk ir neerzink laukinio gyvūno, net mažo, ir net jei jis atrodo miegantis ar negyvas.
- Palik jam vietos. Jei tokį sutiksi, išlik ramus, lėtai atsitrauk ir leisk jam eiti savo keliu.
- Jei toks tau įkando: išlik ramus, nejudėk, skambink pagalbos numeriu (112, 000, 911) arba greitai vyk į ligoninę. Įsimink, kaip jis atrodė, nuotrauka padeda.
Jis nesiruošia tavęs medžioti. Nuodus jis naudoja maistui sugauti arba apsiginti ir daug mieliau pasislėptų. Daugiau apie saugumą
Koks jis didelis?
Koks jis ilgas?
maždaug tokio ilgio kaip sąvaržėlėKoks didelis Brown recluse, palyginti su TAVIMI?
Tik matematika tavo naršyklėje. Niekas neišsaugoma ir niekur nesiunčiama.
Koks jis greitas?
Faktai
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
Mitų griovėjas
Mitas: Brown recluses are common in California and the western United States, where they cause many bites.
Tiesa: 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
Nuodų ekspertams
- Mokslinis pavadinimas
- Loxosceles reclusa
- Grupė
- Vorai
- Šeima
- Sicariidae2
- Tvarka
- Araneae
- Žemynai
- Šiaurės Amerika
- Mažyliai
- 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
- Pavojus žmonėms
- 3 / 5: Rimtas3
Iš kur faktai
- Brown recluse spider (Wikipedia (CC BY-SA 4.0))
- Loxosceles reclusa (iNaturalist): pavadinimai ir klasifikacija.
- Venom Wiki: pavojaus lygis, tipiškas dydis ir greičio spėjimas yra mūsų pačių. Pažiūrėk, kaip juos apskaičiuojame: Kaip vertiname pavojų.
Kiekvienas faktas šiame puslapyje turi numerį, rodantį į jo šaltinį. Jei kažką supainiojome, atsiprašome, mes gyvūnų gerbėjai, o ne mokslo žurnalas. Parašyk mums [email protected] ir mes ištaisysime.
Įkandimai