AraneaePhilodromidae – Running Crab Spiders

Rhysodromus histrio

This record describes Rhysodromus histrio (species). Recorded family: Philodromidae. Recorded order: Araneae.

Identification and Appearance

Rhysodromus histrio - Rhysodromus histrio
Contributed by john and jane balaban; Additional contributions by cheins , kschnei

Identification notes

Epigynum: Palp:

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Philodromidae (Running Crab Spiders)
Genus
Rhysodromus

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

Habitat and Range

Habitat

" P. histrio has been swept from sagebrush in the west and from heath plants, weeds and tall grasses east of the Rocky Mountains" .

Geographic Range

"Southern British Columbia to Nova Scotia, southward to Mexico; Europe ".

About Spiders: the wider group

Order-level background for Araneae, the group containing Rhysodromus histrio. 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 Rhysodromus histrio (5)

Rhysodromus histrio - photo 1
Contributed by john and jane balaban; Additional contributions by cheins , kschnei
Rhysodromus histrio - photo 2
Contributed by john and jane balaban; Additional contributions by cheins , kschnei
Rhysodromus histrio - photo 3
Contributed by john and jane balaban; Additional contributions by cheins , kschnei
Rhysodromus histrio - photo 4
Contributed by john and jane balaban; Additional contributions by cheins , kschnei
Rhysodromus histrio - photo 5
Contributed by john and jane balaban; Additional contributions by cheins , kschnei

Photo credits: Contributed by john and jane balaban; Additional contributions by cheins , kschnei

Frequently Asked Questions About Rhysodromus histrio

How big is Rhysodromus histrio?

Female 6.25 mm, male 5.0 mm .

How do you identify Rhysodromus histrio?

Epigynum: Palp:

Where is Rhysodromus histrio found?
FeatureDetails
HabitatP. histrio has been swept from sagebrush in the west and from heath plants, weeds and tall grasses east of the Rocky Mountains .
RangeSouthern British Columbia to Nova Scotia, southward to Mexico; Europe .

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

Photo credits: Contributed by john and jane balaban; Additional contributions by cheins , kschnei. Contributors retain copyright over their individual contributions.