Home / Cheiracanthiidae / Northern Yellow Sac Spider (Cheiracanthium mildei)

Northern Yellow Sac Spider (Cheiracanthium mildei)

The northern yellow sac spider is a member of the family of cheiracanthiidae spiders. It is an agile predator and the dominant predator of the African cotton leafworm.

Scientific Classification

Northern Yellow Sac Spider

Physical Description and Identification

Adults

Size: 0.7–1 cm

Color: This spider is pale green or tan, with dark brown mouthparts and palpi.

Other Characteristic Features: Their eyes have a layer called the tapetum lucidum, which reflects light to the source from where it was emitted. This indicates that they have excellent vision.

Eggs

Females produce 4-7 egg sacs over a single mating period, with the total number of eggs ranging from 240 to 1900.

Spiderlings

The young spiderlings will leave the safety of their silk sac at night to hunt while returning in the day.

The Web

As they are primarily hunters, they do not produce a lot of webbing.

Is the Northern Yellow Sac Spider Venomous

This spider’s venom is not deadly to humans, and their bite is not very painful.

Quick Facts

Lifespan Males: 21 – 76 days

Females: 10 – 176 days

Distribution Native: Central Asia, North Africa, and Europe

Invasive: United States, South America, and eastern Canada

Habitat Households
Common Predators Not recorded
Diet African Cotton Leafworm

Did You Know

  • German entomologist Ludwig Carl Christian Koch first described this species in 1864.

Image Source: live.staticflickr.com, usaspiders.com

The northern yellow sac spider is a member of the family of cheiracanthiidae spiders. It is an agile predator and the dominant predator of the African cotton leafworm.

Northern Yellow Sac Spider

Physical Description and Identification

Adults

Size: 0.7–1 cm

Color: This spider is pale green or tan, with dark brown mouthparts and palpi.

Other Characteristic Features: Their eyes have a layer called the tapetum lucidum, which reflects light to the source from where it was emitted. This indicates that they have excellent vision.

Eggs

Females produce 4-7 egg sacs over a single mating period, with the total number of eggs ranging from 240 to 1900.

Spiderlings

The young spiderlings will leave the safety of their silk sac at night to hunt while returning in the day.

The Web

As they are primarily hunters, they do not produce a lot of webbing.

Is the Northern Yellow Sac Spider Venomous

This spider’s venom is not deadly to humans, and their bite is not very painful.

Quick Facts

Lifespan Males: 21 – 76 days

Females: 10 – 176 days

Distribution Native: Central Asia, North Africa, and Europe

Invasive: United States, South America, and eastern Canada

Habitat Households
Common Predators Not recorded
Diet African Cotton Leafworm

Did You Know

  • German entomologist Ludwig Carl Christian Koch first described this species in 1864.

Image Source: live.staticflickr.com, usaspiders.com

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