Amaurobius

Amaurobius genus, a part of the tangled nest spider family, has a wide range, spreading across Europe, Asia, and the United States.

Amaurobius

Spiders Belong to the Genus

A. agastusA. annulatusA. antipovae
A. asuncionisA. ausobskyiA. barbaricus
A. barbarusA. borealisA. candia
A. cerberusA. corruptusA. crassipalpis
A. cretaensisA. deelemanaeA. diablo
A. distortusA. dorotheaeA. drenskii
A. erberiA. fenestralisA. ferox
A. festaeA. galeritusA. geminus
A. hagiellusA. heathiA. hercegovinensis
A. intermediusA. jugorumA. koponeni
A. kratochviliA. latebrosusA. latescens
A. leechiA. lesbiusA. longipes
A. mathetesA. mephistoA. minor
A. minorcaA. minutusA. minutus
A. occidentalisA. ossaA. pallidus
A. palomarA. paonA. pavesii
A. pelopsA. pesariniiA. phaeacus
A. prosopidusA. ruffoiA. scopolii
A. similisA. songiA. spinatus
A. strandiA. tamalpaisA. thoracicus
A. transversusA. triangularisA. tristis
A. tulareA. vachoniA. vexans
A. yanoianus 

Physical Description and Identification

Adults

Size: The average size of several spiders of this genus can span from 0.19 to 0.78 inches (5 to 20 mm).

Scientific Classification

  • Family: Amaurobiidae
  • Genus: Amaurobius

Color: Their colors vary from light to dark brown. For instance, the black lace-weaver (Amaurobius ferox), one of the prominent species of this genus has a brownish-tan appearance.

Other Characteristic Features: Most of them have a rounded abdomen with a striped pattern on their legs. Species like the Amaurobius similis, and Amaurobius fenestralis both referred to as the lace-web have v-shaped abdominal markings.

Eggs

The females of several Amaurobius spiders make a white sac where the small-sized eggs remain safely encased.

Spiderlings

There is not enough data on how spiderlings survive but most of them disperse to be on their own in a month’s time after hatching.

The Web

These ground-dwelling spiders construct funnel-shaped or tube-like silken webs mostly behind barks of trees, fences and buildings,

Are Spiders of Amaurobius Genus Venomous

Most spiders of this genus like the lace-webbed spider (Amaurobius similis) are infamous for their painful bites particularly if provoked. However, their venom is not known to cause any serious medical problems.

Quick Facts

DistributionGermany, Switzerland, Greece, Italy, Turkey, Libya, China, Spain, Argentina, Micronesia, France, Italy, and USA
HabitatForests and grass lands
DietInsects
Lifespan1-2 years

Did You Know

  • This genus was first noted and discovered in 1837, by German Entomologist Carl Ludwig Koch.

Image Source: Upload.wikimedia.org

Amaurobius genus, a part of the tangled nest spider family, has a wide range, spreading across Europe, Asia, and the United States.

Amaurobius

Spiders Belong to the Genus

A. agastusA. annulatusA. antipovae
A. asuncionisA. ausobskyiA. barbaricus
A. barbarusA. borealisA. candia
A. cerberusA. corruptusA. crassipalpis
A. cretaensisA. deelemanaeA. diablo
A. distortusA. dorotheaeA. drenskii
A. erberiA. fenestralisA. ferox
A. festaeA. galeritusA. geminus
A. hagiellusA. heathiA. hercegovinensis
A. intermediusA. jugorumA. koponeni
A. kratochviliA. latebrosusA. latescens
A. leechiA. lesbiusA. longipes
A. mathetesA. mephistoA. minor
A. minorcaA. minutusA. minutus
A. occidentalisA. ossaA. pallidus
A. palomarA. paonA. pavesii
A. pelopsA. pesariniiA. phaeacus
A. prosopidusA. ruffoiA. scopolii
A. similisA. songiA. spinatus
A. strandiA. tamalpaisA. thoracicus
A. transversusA. triangularisA. tristis
A. tulareA. vachoniA. vexans
A. yanoianus 

Physical Description and Identification

Adults

Size: The average size of several spiders of this genus can span from 0.19 to 0.78 inches (5 to 20 mm).

Color: Their colors vary from light to dark brown. For instance, the black lace-weaver (Amaurobius ferox), one of the prominent species of this genus has a brownish-tan appearance.

Other Characteristic Features: Most of them have a rounded abdomen with a striped pattern on their legs. Species like the Amaurobius similis, and Amaurobius fenestralis both referred to as the lace-web have v-shaped abdominal markings.

Eggs

The females of several Amaurobius spiders make a white sac where the small-sized eggs remain safely encased.

Spiderlings

There is not enough data on how spiderlings survive but most of them disperse to be on their own in a month’s time after hatching.

The Web

These ground-dwelling spiders construct funnel-shaped or tube-like silken webs mostly behind barks of trees, fences and buildings,

Are Spiders of Amaurobius Genus Venomous

Most spiders of this genus like the lace-webbed spider (Amaurobius similis) are infamous for their painful bites particularly if provoked. However, their venom is not known to cause any serious medical problems.

Quick Facts

DistributionGermany, Switzerland, Greece, Italy, Turkey, Libya, China, Spain, Argentina, Micronesia, France, Italy, and USA
HabitatForests and grass lands
DietInsects
Lifespan1-2 years

Did You Know

  • This genus was first noted and discovered in 1837, by German Entomologist Carl Ludwig Koch.

Image Source: Upload.wikimedia.org

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