AraneaeTheridiidae – Cobweb Spiders

Simitidion simile

This record describes Simitidion simile (species). Recorded family: Theridiidae. Recorded order: Araneae.

Identification and Appearance

Simitidion simile - Simitidion simile
Contributed by Lynette Elliott; Additional contributions by Nathaniel Green

To differentiate from Theridion : Trichobothrium absent on metatarsus III in Simitidion (Wunderlich, 2008)

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Theridiidae (Cobweb Spiders)
Genus
Simitidion

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

Washington and British Colombia. All across Europe.

Additional species information

Species notes from the sources

Etymology: Simitidion simile (C. L. Koch, 1836)

About Spiders: the wider group

Order-level background for Araneae, the group containing Simitidion simile. Species-specific details appear above.

Group overview

As of 2023, 51,673 spider species in 136 families have been recorded, though an estimated 150,000 species exist. Spiders rank 7th in total species diversity among all organism orders. Only 0.5% of spider species pose any risk to human health.

Ecological role of the group

Spider venom contains complex peptides with diverse pharmacological activities, making them valuable for drug development research. Spiders produce up to 7 types of silk from specialized glands. Spider silk genes have been inserted into mammals and plants for biotech applications.

Economic and practical significance of the group

The global spider community kills an estimated 400-800 million tons of prey annually (2017 study). Spiders provide billions of dollars in natural pest control for agriculture. Spider silk is 5× stronger than steel of the same diameter, driving a biomaterials research industry.

Recorded sources for this group: World Spider Catalog, PNAS, Nature, ScienceDirect. Imported estimates may describe particular regions or reporting periods.

Explore Araneae families and species →

Photos of Simitidion simile (5)

Simitidion simile - photo 1
Contributed by Lynette Elliott; Additional contributions by Nathaniel Green
Simitidion simile - photo 2
Contributed by Lynette Elliott; Additional contributions by Nathaniel Green
Simitidion simile - photo 3
Contributed by Lynette Elliott; Additional contributions by Nathaniel Green
Simitidion simile - photo 4
Contributed by Lynette Elliott; Additional contributions by Nathaniel Green
Simitidion simile - photo 5
Contributed by Lynette Elliott; Additional contributions by Nathaniel Green

Photo credits: Contributed by Lynette Elliott; Additional contributions by Nathaniel Green

Frequently Asked Questions About Simitidion simile

What is Simitidion simile?

Simitidion simile is a species in the family Theridiidae, within the order Araneae.

How big is Simitidion simile?
FeatureDetails
FemaleLength 1.9-2.7 mm
MaleLength 2.0-2.5 mm
How do you identify Simitidion simile?

To differentiate from Theridion : Trichobothrium absent on metatarsus III in Simitidion (Wunderlich, 2008)

Where is Simitidion simile found?

Range: Washington and British Colombia. All across Europe.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Lynette Elliott; Additional contributions by Nathaniel Green. Contributors retain copyright over their individual contributions.