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Hobo spider

Eratigena agrestis

Kuhusu jina: The genus name Eratigena is an anagram of Tegenaria, the genus it was moved out of in 2013.1

Hana madharaHana madhara kwa watu. Hakuna cha kuhofia.

Buibui

KuumwaHula: Wadudu

Hatari kwa watu: HafifuKama kudungwa na nyuki au chini ya hapo. Kimsingi hana madhara kwa watu.

The hobo spider is a brown spider that lives in fields, woods and under rocks in Europe, Central Asia and western North America. It builds a funnel-shaped sheet of silk and waits at the narrow end for insects to crawl on. It sometimes builds webs in or around homes, so people often worry about its bite.1

Anaishi

Europe to Central Asia, and western North America (Pacific Northwest and Great Basin)1

Ulaya, Asia

Nyumbani

Hobo spiders live mostly in fields, woods and under rocks. They sometimes build webs in or around human homes. They often make a horizontal, trampoline-like web near brick walls or wood piles, where they have shelter and wait for prey.1

Urefu

1.4 cm (0.6 in)1

Kasi ya juu

takriban km 1 kwa saa (maili 0.62 kwa saa)

Nchi kavu, makadirio

Hula nini?

Hobo spiders catch prey insects that blunder onto their funnel webs. They wait at the small end of the funnel for the insects to arrive.1

Picha ya Hobo spider — Hobo spider. Picha: Tone Killick. CC BY 4.0, iNaturalist.

Jinsi ya kumtambua

Body length is 7 to 14 mm, and the spider is brownish in colour.1
The abdomen has V-shaped chevron patterns down the middle, pointing towards the head.1
There is a light stripe running down the middle of the underside (sternum).1
There are no coloured bands where the leg joints meet.1
The top of the front body section (cephalothorax) has indistinct or diffused patterns, not two distinct dark stripes.1

Mara nyingi huchanganywa na: Other Eratigena species have three or four pairs of light spots on the sides of the sternum rather than a central stripe, though these spots can be very faint. Spiders in the genera Agelenopsis and Hololena, and possibly some wolf spiders, have two distinct dark stripes on the top of the front body section. Positive identification of hobo spiders usually requires microscopic examination of their sex organs by an expert.1

Nguvu ya sumu

Kuumwa

Sumu hutoka kupitia meno yake ya sumu au meno anapouma.

Sumu yake hufanya nini?

There is no clear evidence that the hobo spider has venom that is dangerous to humans. Earlier case reports linked its bites to isolated cases of necrosis, which is the death of skin tissue, but this is no longer supported.1

Ana hatari gani kwa watu?

Hatari kwa watu: HafifuKama kudungwa na nyuki au chini ya hapo. Kimsingi hana madhara kwa watu.

There is little evidence that the hobo spider is dangerously venomous. The US CDC no longer lists it among venomous species, as of 2017. In Canada there is no evidence that its bites cause skin necrosis.1

Akiuma

Osha jeraha na uweke barafu kupunguza maumivu. Tafuta msaada wa kitabibu kama maumivu ni makali, yanasambaa au mtu anajisikia vibaya.

Daima piga namba ya dharura kwanza (112, 000, 911). Huu ni mwongozo wa jumla wa huduma ya kwanza, si ushauri wa kitabibu. Misingi ya huduma ya kwanza

Kaa salama

Kamwe usimguse, kumkamata wala kumchokoza mnyama wa porini, hata akiwa mdogo, na hata akionekana amelala au amekufa.
Mpe nafasi. Ukikutana naye, tulia, rudi nyuma polepole na umwache aende zake.
Akikuuma: tulia, usitikisike, piga namba yako ya dharura (112, 000, 911) au nenda hospitali haraka. Kumbuka alivyoonekana, picha husaidia.

Hakuwindi wewe. Hutumia sumu yake kukamata chakula au kujilinda, na hupendelea zaidi kujificha. Zaidi kuhusu kukaa salama

Wapi duniani?

Afrika Asia Ulaya Amerika Kaskazini Amerika Kusini Australia na Oceania

Ana ukubwa gani?

Ana urefu gani?

mdogo kiasi cha kukaa juu ya ukucha wakoangeweza kukimbia mita 100 kwa sekunde 360 (binadamu mwenye kasi zaidi anahitaji 9.6)

Hobo spider ana ukubwa gani ukilinganisha na WEWE?

Ni hesabu tu kwenye kivinjari chako. Hakuna kinachohifadhiwa wala kutumwa popote.

Ana kasi gani?

Kobe takriban km 0.3 kwa saa (0.19 mph)

Hobo spider takriban km 1 kwa saa (0.62 mph)

Mtu anayetembea takriban km 5 kwa saa (3.1 mph)

inafaa kujua

Ukweli

In Europe, hobo spiders mostly avoid houses because the larger giant house spider lives there and competes with them, so human contact is uncommon.1

The male hobo spider dies after mating.1

A hobo spider was probably carried to the small artificial Danish island of Peberholm by trains.1

Kuvunja dhana potofu

Dhana potofu: Hobo spiders have dangerous venom that causes skin necrosis.

Ukweli: There is little clear evidence that the hobo spider's venom is dangerous to humans. Some bites reported as hobo spider bites may have been from the desert grass spider.1

Kwa wataalamu wa sumu

Jina la kisayansi: Eratigena agrestis
Kundi: Buibui
Familia: Agelenidae2
Mpangilio: Araneae
Mabara: Ulaya, Asia
Watoto: Females lay eggs in September, and they hatch during late spring.1
Hatari kwa watu: 1 / 5: Hafifu3

Ukweli unatoka wapi

Hobo spider (Wikipedia (CC BY-SA 4.0))
Eratigena agrestis (iNaturalist): majina na uainishaji.
Venom Wiki: kiwango cha hatari, ukubwa wa kawaida na makadirio ya kasi ni yetu wenyewe. Ona jinsi tunavyovipata: Jinsi tunavyopima hatari.

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