Cybaeopsis euopla
This record describes Cybaeopsis euopla (species). Recorded family: Amaurobiidae. Recorded order: Araneae.
Identification and Appearance

Cybaeopsis euopla is a species of hacklemesh weaver in the spider family Amaurobiidae. It is found in the United States and Canada.
Wikipedia reference for Cybaeopsis euopla: https://en.wikipedia.org/wiki/Cybaeopsis_euopla.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Arachnida
- Order
- Araneae (Spiders)
- Family
- Amaurobiidae (Hacklemesh Weavers)
- Genus
- Cybaeopsis
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
This species is often found in deep deciduous leaf litter.
Geographic Range
Nova Scotia and Newfoundland west to eastern British Columbia and north into Northwest Territories. It is only known from Minnesota, Wisconsin and Maine in the U.S.
Seasonal Activity
April to October with peaks in May and June
Additional species information
Species notes from the sources
Etymology: Author of the name: Bishop & Crosby. Year first published: 1935.
About Spiders: the wider group
Order-level background for Araneae, the group containing Cybaeopsis euopla. 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.
Photos of Cybaeopsis euopla (2)
Photo credits: (c) Raphaël Grellety, some rights reserved (CC BY-NC), uploaded by Raphaël Grellety | Contributed by Lynette Elliott; Additional contributions by cheins
Frequently Asked Questions About Cybaeopsis euopla
What is Cybaeopsis euopla?
Cybaeopsis euopla is a species in the family Amaurobiidae, within the order Araneae.
Where is Cybaeopsis euopla found?
| Feature | Details |
|---|---|
| Habitat | This species is often found in deep deciduous leaf litter. |
| Range | Nova Scotia and Newfoundland west to eastern British Columbia and north into Northwest Territories. It is only known from Minnesota, Wisconsin and Maine in the U.S. |
When is Cybaeopsis euopla active?
Cybaeopsis euopla: seasonal activity - April to October with peaks in May and June.
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