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Hobo (Eratigena agrestis)

Hobo spiders, wrongly called “funnel-web spiders” have multiple appearances so it has been difficult for scientists to describe the species. Amongst its scientific synonyms, Philoica agrestis, Tegenaria rhaetica, Tegenaria magnacava, Tegenaria osellai, and Tegenaria trinacriae are included. The spiders do make webs for catching their preys.

Scientific Classification

Hobo Spider

Family: Agelenidae

Genus: Eratigena

Scientific name: Eratigena agrestis

Physical Description and Identification

Adults

Size: Females are 0.27-0.55 in (0.68-1.4 cm) and males are smaller. The leg span is 2.54-5.08 in (6.4-12.9 cm).

Color: Light or medium brown body, in the middle of the breastbone it exhibits light stripes. In the middle of the abdomen there is a chevron or V-shaped pattern, facing upwards (towards the head).

Other Characteristic Features: The abdomen is oblong and the spinnerets are visible from above.

Hobo Spider Size

Eggs

September-October is the season when the female hobo spider lays eggs into egg sacs and cases. The number of cases can be from one to four. Around 100 eggs are laid approximately. The material of the egg case is not only silk but also leaves and other debris.

Hobo Spider Egg

Spiderlings

Juvenile spiders emerge around June and they go through several molting phases before reaching adulthood. It takes around one or two months to be completely mature.

The Web

Only female spider build funnel-like webs and they stay inside that. The mating is occurred on the web and males die afterward. Females die post their egg-laying session.

Hobo Spider Web

Are Hobo Spiders Venomous

Earlier theories suggest that the necrosis or skin death could be an effect of the spider bite, but recent research has shown that the spider is not venomous, but it can be aggressive enough to bite. The bite is believed to be very painful for the human skin and medical attention is required. Although some conflicting theories say that nausea, headache, dry mouth are symptoms of the hobo spider bite but nothing has been medically confirmed.

Male Hobo Spider
Female Hobo Spider

Quick Facts

Distribution North America, Central Asia, and Europe
Habitat Fields, crevices, basements, moist and dark areas
Diet Insects and other spiders
Web-type Funnel-shaped
Predators Other bigger spiders and ants
IUCN Conservation Status Not listed
Hobo Spider Image

Did You Know

  • The web of the hobo spider acts as a trampoline.
  • The species was earlier listed as Aranea agrestis and as Tegenaria agrestis before finally transferred to Eratigena genus.
Hobo Spider Pictures

Image Credits: Cdn-prod.medicalnewstoday.com, City-data.com, Dogcarseat.co, Burkemuseum.org, Catseyepest.com, bugguide.net,
Spiderid.com, Victoriabugzoo.ca

Hobo spiders, wrongly called “funnel-web spiders” have multiple appearances so it has been difficult for scientists to describe the species. Amongst its scientific synonyms, Philoica agrestis, Tegenaria rhaetica, Tegenaria magnacava, Tegenaria osellai, and Tegenaria trinacriae are included. The spiders do make webs for catching their preys.

Hobo Spider

Family: Agelenidae

Genus: Eratigena

Scientific name: Eratigena agrestis

Physical Description and Identification

Adults

Size: Females are 0.27-0.55 in (0.68-1.4 cm) and males are smaller. The leg span is 2.54-5.08 in (6.4-12.9 cm).

Color: Light or medium brown body, in the middle of the breastbone it exhibits light stripes. In the middle of the abdomen there is a chevron or V-shaped pattern, facing upwards (towards the head).

Other Characteristic Features: The abdomen is oblong and the spinnerets are visible from above.

Hobo Spider Size

Eggs

September-October is the season when the female hobo spider lays eggs into egg sacs and cases. The number of cases can be from one to four. Around 100 eggs are laid approximately. The material of the egg case is not only silk but also leaves and other debris.

Hobo Spider Egg

Spiderlings

Juvenile spiders emerge around June and they go through several molting phases before reaching adulthood. It takes around one or two months to be completely mature.

The Web

Only female spider build funnel-like webs and they stay inside that. The mating is occurred on the web and males die afterward. Females die post their egg-laying session.

Hobo Spider Web

Are Hobo Spiders Venomous

Earlier theories suggest that the necrosis or skin death could be an effect of the spider bite, but recent research has shown that the spider is not venomous, but it can be aggressive enough to bite. The bite is believed to be very painful for the human skin and medical attention is required. Although some conflicting theories say that nausea, headache, dry mouth are symptoms of the hobo spider bite but nothing has been medically confirmed.

Male Hobo Spider
Female Hobo Spider

Quick Facts

Distribution North America, Central Asia, and Europe
Habitat Fields, crevices, basements, moist and dark areas
Diet Insects and other spiders
Web-type Funnel-shaped
Predators Other bigger spiders and ants
IUCN Conservation Status Not listed
Hobo Spider Image

Did You Know

  • The web of the hobo spider acts as a trampoline.
  • The species was earlier listed as Aranea agrestis and as Tegenaria agrestis before finally transferred to Eratigena genus.
Hobo Spider Pictures

Image Credits: Cdn-prod.medicalnewstoday.com, City-data.com, Dogcarseat.co, Burkemuseum.org, Catseyepest.com, bugguide.net,
Spiderid.com, Victoriabugzoo.ca

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