0637. zenbakia, guztira 1 402

Red widow

Latrodectus bishopi

Izenari buruz: The name bishopi honours Marshall B. Bishop, who collected the specimens used to describe the spider.1

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

Armiarmak

KoskaJaten du: Haragia

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

The red widow is a venomous spider that lives only in Florida, in the dry, sandy scrub where sand pine trees grow. It is a close relative of the black widow, but it rarely comes into contact with people, so it is not often met. Its bright red colours make it easy to recognise.1

Non bizi den

Central and southern Florida, USA1

Ipar Amerika

Hasiera

It lives mainly in sand-pine scrub, which is inland areas of dry sand dunes covered in sand pine trees. It builds most of its webs in palmetto bushes, at least 30 cm above the ground. It seldom comes into contact with humans.1

Luzera

4 cm (1,6 in)3

heldu baten ohiko tamaina

Abiadura handiena

0,98 km/h inguru (0,61 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

It is a predator of the insect Hemisphaerota cyanea. It catches prey in its tangled webs, then retreats to a funnel-shaped hideaway below.1

Argazkia: Red widow — Red widow. Argazkia: Stevenklioze00. CC BY-SA 4.0, Wikimedia Commons.

Nola ezagutu

The cephalothorax (the front part of the body) is red-orange.1
The abdomen is black, with yellow rings outlining rows of red spots.1
The legs are vermilion red.1
The underside does not have the familiar hourglass marking. It usually has one or two small red marks instead.1
Females are almost double the size of males.1

Askotan honekin nahasten da: It is closely related to the black widow (Latrodectus mactans). The two can be told apart by features of the male and female genitalia, which are examined under magnification. The red widow's male embolus has one fewer loop, and the female's connecting ducts to the spermatheca also have one fewer loop.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zer egiten du bere pozoiak?

The red widow is venomous like other members of the genus Latrodectus. In a documented bite, the main effect was a mildly painful throbbing sensation that lasted several hours. The median lethal dose (LD50) of its venom in mice is 2.20 mg/kg, and each spider contains about 0.157 mg of venom.1

Zein arriskutsua da pertsonentzat?

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

No bites from this spider are recorded in the medical literature. It seldom comes into contact with humans, unlike the black and brown widows, which live close to people. One documented bite caused a mildly painful throbbing that lasted several hours.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?

klip bat bezain luzea, gutxi gorabehera

Zein handia da Red widow 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)

Red widow 0,98 km/h inguru (0,61 mph)

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

jakin beharrekoa

Datuak

A bite was filmed and documented in 2023 by biologist Spencer Hoffman, one of the few recorded bites from this species.1

Females are almost double the size of males.1

Its predators are thought to include sphecid wasps and the Florida scrub jay.1

It lives in sand-pine scrub, a habitat found only in Florida and coastal Alabama.1

Mito-hauslea

Mitoa: All widow spiders have the hourglass marking on the underside.

Egia: The red widow does not have the familiar hourglass marking. It usually has one or two small red marks instead.1

Pozoi-adituentzat

Izen zientifikoa: Latrodectus bishopi
Taldea: Armiarmak
Familia: Theridiidae2
Ordena: Araneae
Kontinenteak: Ipar Amerika
Kumeak: The spider stores its egg sacs in its funnel-shaped retreat.1
Nola dagoen naturan: Threatened (in the United States)1
Arriskua pertsonentzat: 2 / 5: Mingarria3

Datuak nondik datozen

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

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