0660. zenbakia, guztira 1 402

Mediterranean recluse

Loxosceles rufescens

Izenari buruz: The specific name rufescens means "reddish", referring to the colour of the species.1

Min ematen du, besterik ezMin ematen du, baina ez dizu kalte larririk egingo.

Armiarmak

KoskaJaten du: Intsektuak

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

The Mediterranean recluse spider is a small spider that comes from the Mediterranean region. It has spread to many parts of the world through human travel and trade, and it is listed as one of the most invasive spiders in the world. Its bite can cause skin damage, so it is worth knowing what it looks like.1

Non bizi den

Mediterranean and western Asia; now also Madagascar, south-east Asia, Australia, islands and North America1

Europa, Asia, Afrika

Hasiera

It usually lives in caves, basements and tunnels, and prefers warm, generally dry weather. Where it is not native, it is often found in damp places such as basements, where it hunts cockroaches and silverfish. In 2021, spiders of this species were found in a university library basement, which led to the library closing for two days.1

Luzera

7 mm eta 7,5 mm artean (0,3 in eta 0,3 in artean)1

Abiadura handiena

0,8 km/h inguru (0,5 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

It is an active hunter that goes out at night to catch and kill insects, rather than waiting in a web. It mainly targets smaller insects, such as silverfish and cockroaches, because their soft bodies are easier to overcome.1

Argazkia: Mediterranean recluse — Mediterranean recluse. Argazkia: Ludivine Lamare. CC BY 4.0, iNaturalist.

Nola ezagutu

A medium-sized spider with three pairs of two eyes arranged in a triangle, instead of the usual eight eyes1
A violin-shaped pattern on the front part of the body (cephalothorax)1
Adults of both sexes grow to about 7 to 7.5 cm... no, 7 to 7.5 mm long1
Its web is very thin and fragile, made of silk strands laid in a disorganised way1

Askotan honekin nahasten da: It is nearly indistinguishable in appearance from the brown recluse spider (Loxosceles reclusa). Pest control for one can often be adapted for the other.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

Its venom contains an enzyme called sphingomyelinase D, which causes necrosis, meaning the death of skin and other tissue around the bite. Most cases are medically insignificant. In some cases, penetrating pain starts 2 to 8 hours after the bite, followed by burning, and the area becomes red and painful. A blister may form that turns dark blue with a sunken centre over several days. In rare cases, the blood and kidneys can be damaged, which can lead to kidney failure.1

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

Most bites are medically insignificant, but some people are affected much more seriously. In 2024, the species was blamed for the deaths of two people in Italy.1

Kosk egiten badu

Garbitu koska eta jarri izotz-poltsa bat gainean minerako. Lortu mediku-laguntza mina handia bada, zabaltzen bada edo pertsona gaizki sentitzen bada.

Deitu beti lehenik zure larrialdi-zenbakira (112, 000, 911). Lehen sorospenei buruzko orientabide orokorra da hau, ez mediku-aholkua. Lehen sorospenen oinarriak

Egon seguru

Ez ukitu, ez harrapatu eta ez zirikatu inoiz animalia basati bat, txikia izan arren, eta lo edo hilda dagoela badirudi ere.
Utzi tartea. Bat aurkitzen baduzu, egon lasai, egin atzera poliki eta utzi bere bidetik joaten.
Batek kosk egiten badizu: egon lasai, egon geldi, deitu zure larrialdi-zenbakira (112, 000, 911) edo joan ospitalera azkar. Gogoratu nolakoa zen, argazki batek laguntzen du.

Ez dabil zure atzetik. Pozoia janaria harrapatzeko edo bere burua babesteko erabiltzen du, eta askoz nahiago du ezkutatu. Seguru egoteari buruz gehiago

Munduko zein tokitan?

Afrika Asia Europa Ipar Amerika Hego Amerika Australia eta Ozeania

Zein handia da?

Zein luzea da?

zure azazkalaren gainean esertzeko bezain txikia

Zein handia da Mediterranean recluse ZUREKIN alderatuta?

Matematika hutsa zure nabigatzailean. Ez da ezer gordetzen, ezta inora bidaltzen ere.

Zein azkarra da?

Dortoka bat 0,3 km/h inguru (0,19 mph)

Mediterranean recluse 0,8 km/h inguru (0,5 mph)

Oinez doan pertsona bat 5 km/h inguru (3,1 mph)

jakin beharrekoa

Datuak

It is listed as one of the most invasive spiders in the world.1

It can survive for long periods without food and water, which makes it hard to control in homes.1

Young spiders shed their skins several times as they grow, and these skins often look pale and ghostly.1

Males hunt more actively than females, partly because they are also searching for a mate.1

Pozoi-adituentzat

Izen zientifikoa: Loxosceles rufescens
Taldea: Armiarmak
Familia: Sicariidae2
Ordena: Araneae
Kontinenteak: Europa, Asia, Afrika
Kumeak: Egg sacs contain about 40 eggs, which take a few weeks to hatch, depending on the temperature.1
Nola dagoen naturan: Least Concern (South African National Biodiversity Institute)1
Arriskua pertsonentzat: 2 / 5: Mingarria3

Datuak nondik datozen

Mediterranean recluse spider (Wikipedia (CC BY-SA 4.0))
Loxosceles rufescens (iNaturalist): izenak eta sailkapena.
Venom Wiki: arrisku-maila, ohiko tamaina eta abiadura-kalkulua geureak dira. Ikusi nola kalkulatzen ditugun: Nola baloratzen dugun arriskua.

Orrialde honetako datu bakoitzak zenbaki bat du, bere iturrira eramaten zaituena. Zerbait gaizki badugu, barkatu, animalien zaleak gara, ez zientzia-aldizkari bat. Esaiguzu [email protected] helbidean eta konponduko dugu.

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