Agyneta fillmorana
This record describes Agyneta fillmorana (species). Recorded family: Linyphiidae. Recorded order: Araneae.
Identification and Appearance
| Feature | Description |
|---|---|
| Carapace | Carapace orange, shiny, finely reticulate; can be suffused with dark gray along radiating lines and pars cephalica. |
| Abdomen | Abdomen pattern variable: large morph male's is off-white with pattern consisting of a dark median band extending laterally into chevrons; the small morph male's is off-white with pattern consisting of a broken dark median band extending into chevrons. |
| Legs | Legs light orange-yellow. Female abdomen pattern is variable, off-white with pattern consisting of a dark median band reaching mid-way with some apical chevrons or off-white with pattern consisting of a dark median broken band extending apically into lateral chevrons. Palp This species displays an extraordinary range of morphs, in reference to the male overall size and cheliceral morphology. |
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Arachnida
- Order
- Araneae (Spiders)
- Family
- Linyphiidae (Sheetweb and Dwarf Spiders)
- Subfamily
- Linyphiinae
- Genus
- Agyneta
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Leaf litter, conifer foliage, meadows and grasslands.
Geographic Range
Western North America (British Columbia to Arizona). According to the American Arachnological Society --BC; AK, AZ, CA, NV, OR, UT, WA, WY
Additional species information
Species notes from the sources
Etymology: Author of name: Chamberlin. Year first published: 1919, as Bathyphantes fillmoranus .
About Spiders: the wider group
Order-level background for Araneae, the group containing Agyneta fillmorana. 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 Agyneta fillmorana (2)
Photo credits: Contributed by Kyron Basu; Additional contributions by cheins , Mandy Howe
Frequently Asked Questions About Agyneta fillmorana
What is Agyneta fillmorana?
Agyneta fillmorana is a species in the family Linyphiidae, within the order Araneae.
How big is Agyneta fillmorana?
Small morph male: 1.91mm Large morph male: 2.57mm Female: 2.11mm
How do you identify Agyneta fillmorana?
| Feature | Description |
|---|---|
| Carapace | Carapace orange, shiny, finely reticulate; can be suffused with dark gray along radiating lines and pars cephalica. |
| Abdomen | Abdomen pattern variable: large morph male's is off-white with pattern consisting of a dark median band extending laterally into chevrons; the small morph male's is off-white with pattern consisting of a broken dark median band extending into chevrons. |
| Legs | Legs light orange-yellow. Female abdomen pattern is variable, off-white with pattern consisting of a dark median band reaching mid-way with some apical chevrons or off-white with pattern consisting of a dark median broken band extending apically into lateral chevrons. Palp |
Where is Agyneta fillmorana found?
| Feature | Details |
|---|---|
| Habitat | Leaf litter, conifer foliage, meadows and grasslands. |
| Range | Western North America (British Columbia to Arizona). According to the American Arachnological Society --BC; AK, AZ, CA, NV, OR, UT, WA, WY |