AraneaeLinyphiidae – Sheetweb and Dwarf Spiders

Walckenaeria tibialis

This record describes Walckenaeria tibialis (species). Recorded family: Linyphiidae. Recorded order: Araneae.

Identification and Appearance

Walckenaeria tibialis - Walckenaeria tibialis
(c) cheins1, all rights reserved, uploaded by cheins1
FeatureDetails
Carapacedeep chestnut brown. The male has a stout horn anteriorly; the length of the horn is somewhat variable. There is a clump of stout spatulate hairs between the base of the horn and the posterior eyes . Lines of minute pits radiating from the fovea are sometimes visible in the male.
Abdomenblack.
Legsorange to deep brown. Palp

Wikipedia reference for Walckenaeria tibialis: https://en.wikipedia.org/wiki/Walckenaeria tibialis.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Linyphiidae (Sheetweb and Dwarf Spiders)
Subfamily
Erigoninae
Genus
Walckenaeria

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

Habitat and Range

Habitat

"Habitats recorded are in a cornfield, at the edge of moist woods and under a rock."

Geographic Range

According to the American Arachnological Society --MB, ON, PQ; MA, MI, NY, OH but there is a record from MN here on BugGuide.

About Spiders: the wider group

Order-level background for Araneae, the group containing Walckenaeria tibialis. 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 Walckenaeria tibialis (2)

Walckenaeria tibialis - photo 1
(c) cheins1, all rights reserved, uploaded by cheins1 | Contributed by v belov; Additional contributions by cheins
Walckenaeria tibialis - photo 2
(c) cheins1, all rights reserved, uploaded by cheins1 | Contributed by v belov; Additional contributions by cheins

Photo credits: (c) cheins1, all rights reserved, uploaded by cheins1 | Contributed by v belov; Additional contributions by cheins

Frequently Asked Questions About Walckenaeria tibialis

What is Walckenaeria tibialis?

Walckenaeria tibialis is a species in the family Linyphiidae, within the order Araneae.

How big is Walckenaeria tibialis?
FeatureDetails
Male1.8-1.9mm
Female1.9mm
How do you identify Walckenaeria tibialis?
FeatureDetails
Carapacedeep chestnut brown. The male has a stout horn anteriorly; the length of the horn is somewhat variable. There is a clump of stout spatulate hairs between the base of the horn and the posterior eyes . Lines of minute pits radiating from the fovea are sometimes visible in the male.
Abdomenblack.
Legsorange to deep brown. Palp
Where is Walckenaeria tibialis found?
FeatureDetails
HabitatHabitats recorded are in a cornfield, at the edge of moist woods and under a rock.
RangeAccording to the American Arachnological Society --MB, ON, PQ; MA, MI, NY, OH but there is a record from MN here on BugGuide.

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

Photo credits: (c) cheins1, all rights reserved, uploaded by cheins1 | Contributed by v belov; Additional contributions by cheins. Contributors retain copyright over their individual contributions.