AraneaeAnyphaenidae – Ghost Spiders

Anyphaena dixiana

This record describes Anyphaena dixiana (species). Recorded family: Anyphaenidae. Recorded order: Araneae.

Identification and Appearance

Anyphaena dixiana - Anyphaena dixiana
Contributed by Laura P.; Additional contributions by cheins

May be quickly recognized by the spur borne on the dorsal prong of the RTA of males and the greatly reduced epigynal midpiece of females. Palp (ventral/lateral) Epigynum (ventral/dorsal dissected) Closest to A. crebrispina .

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Anyphaenidae (Ghost Spiders)
Genus
Anyphaena

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

Habitat and Range

Habitat

"Specimens have been taken from 5400 to 9000 feet (1650-2750 m), in yellow pine/oak and montane forests, in alfalfa, under dead agave and frequently in houses."

Geographic Range

North-central Colorado south to western Texas and west to southern California.

Seasonal Activity

"Mature males have been taken from mid-August through mid-May, mature females from late September through late April."

About Spiders: the wider group

Order-level background for Araneae, the group containing Anyphaena dixiana. 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 Anyphaena dixiana (5)

Anyphaena dixiana - photo 1
Contributed by Laura P.; Additional contributions by cheins
Anyphaena dixiana - photo 2
Contributed by Laura P.; Additional contributions by cheins
Anyphaena dixiana - photo 3
Contributed by Laura P.; Additional contributions by cheins
Anyphaena dixiana - photo 4
Contributed by Laura P.; Additional contributions by cheins
Anyphaena dixiana - photo 5
Contributed by Laura P.; Additional contributions by cheins

Photo credits: Contributed by Laura P.; Additional contributions by cheins

Frequently Asked Questions About Anyphaena dixiana

What is Anyphaena dixiana?

Anyphaena dixiana is a species in the family Anyphaenidae, within the order Araneae.

How big is Anyphaena dixiana?

~4.14 mm female ~3.85 mm male

How do you identify Anyphaena dixiana?

May be quickly recognized by the spur borne on the dorsal prong of the RTA of males and the greatly reduced epigynal midpiece of females. Palp (ventral/lateral) Epigynum (ventral/dorsal dissected)

Where is Anyphaena dixiana found?
FeatureDetails
HabitatSpecimens have been taken from 5400 to 9000 feet (1650-2750 m), in yellow pine/oak and montane forests, in alfalfa, under dead agave and frequently in houses.
RangeNorth-central Colorado south to western Texas and west to southern California.
When is Anyphaena dixiana active?

Anyphaena dixiana: seasonal activity - Mature males have been taken from mid-August through mid-May, mature females from late September through late April..

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

Photo credits: Contributed by Laura P.; Additional contributions by cheins. Contributors retain copyright over their individual contributions.