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Triangulate cobweb spider

Steatoda triangulosa

Izenari buruz: Its common name comes from the triangle-shaped pattern on the top of its abdomen.1

KaltegabeaKaltegabea pertsonentzat. Ez dago kezkatzeko ezer.

Armiarmak

KoskaJaten du: Haragia

Arriskua pertsonentzat: ArinaErle-ziztada bat bezala edo gutxiago. Ia kaltegabea pertsonentzat.

The triangulate cobweb spider is a small, common house spider with a triangle-shaped pattern on its abdomen. It builds messy sticky webs in dark corners of buildings and is found across much of the world. It is a helpful spider that catches many insects and other spiders.1

Non bizi den

Native to Eurasia. Introduced to North America, Argentina, the Canary Islands and South Africa.1

Europa, Asia

Hasiera

This spider is mainly a house spider. It builds webs in dark corners of buildings and other man-made structures. It is also found in dark places outdoors, often close to the ground and under stones.1

Luzera

6 mm (0,2 in)1

Abiadura handiena

0,74 km/h inguru (0,46 mph)

Lehorrean, kalkulu gutxi gorabeherakoa

Zer jaten du?

It preys on many arthropods, including ants (such as fire ants), other spiders, pillbugs and ticks. It also catches some spiders that are believed to be harmful to humans, including the brown recluse. It catches whatever comes into its web and builds the web to suit the size of its prey.1

Argazkia: Triangulate cobweb spider — Triangulate cobweb spider. Argazkia: Patrick Hacker. CC BY 4.0, iNaturalist.

Nola ezagutu

Adult females are 3 to 6 mm long.1
The cephalothorax (front body section) is brownish-orange.1
The legs are spindly and yellowish, with tiny hairs.1
The round, bulbous abdomen is creamy, with parallel purply-brown zigzag lines running front to back.1
The abdomen pattern includes a triangle shape on its top side.1

Pozoi-ahalmena

Koska

Pozoia letaginetatik edo hortzetatik ateratzen da kosk egiten duenean.

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: ArinaErle-ziztada bat bezala edo gutxiago. Ia kaltegabea pertsonentzat.

It is not very defensive towards humans. There is one known case of human envenomation.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 Triangulate cobweb spider 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)

Triangulate cobweb spider 0,74 km/h inguru (0,46 mph)

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

jakin beharrekoa

Datuak

Below or inside its web, there can be many dead insects, from stink bugs to other spiders and even wasps.1

Among the Steatoda spiders, it is one of the most voracious and prey-driven, even though it is one of the smaller species.1

Because of its limited eyesight, it relies mostly on vibrations travelling through its web to find prey and to sense larger animals that could harm it.1

Its egg sac is loosely woven silk and is about the same size as the spider itself.1

It spends hours each day building its web and eats during only part of its day.1

Pozoi-adituentzat

Izen zientifikoa: Steatoda triangulosa
Taldea: Armiarmak
Familia: Theridiidae2
Ordena: Araneae
Kontinenteak: Europa, Asia
Kumeak: Each egg sac is about the same size as the spider and holds approximately 30 eggs. Reproduction without males (parthenogenesis) is suspected but not proven.1
Nola dagoen naturan: Least Concern1
Arriskua pertsonentzat: 1 / 5: Arina3

Datuak nondik datozen

Triangulate cobweb spider (Wikipedia (CC BY-SA 4.0))
Steatoda triangulosa (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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