AraneaeSalticidae – Jumping Spiders

Hammerjawed Jumper

Zygoballus rufipes

This record describes Zygoballus rufipes (species). Recorded family: Salticidae. Recorded order: Araneae.

Identification and Appearance

Hammerjawed Jumper - Zygoballus rufipes
Contributed by tom murray; Additional contributions by Jay Barnes , cheins , Dick Walton

Identification notes

Palp Epigynum (ventral/dorsal)

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae (Spiders)
Family
Salticidae (Jumping Spiders)
Genus
Zygoballus

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

Habitat and Range

Habitat

Often found on low-growing broadleaf plants in open wooded areas. (jb)

Geographic Range

Massachusetts west to Minnesota and south to Florida and Texas as well as Arizona

Diet and Behavior

Life History

Egg sacs typically contain around 25 eggs. Sexually dimorphism occurs very early.

About Spiders: the wider group

Order-level background for Araneae, the group containing Zygoballus rufipes. 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 Hammerjawed Jumper (2)

Hammerjawed Jumper - photo 1
Contributed by tom murray; Additional contributions by Jay Barnes , cheins , Dick Walton
Hammerjawed Jumper - photo 2
Contributed by tom murray; Additional contributions by Jay Barnes , cheins , Dick Walton

Photo credits: Contributed by tom murray; Additional contributions by Jay Barnes , cheins , Dick Walton

Frequently Asked Questions About Hammerjawed Jumper

How do you identify Hammerjawed Jumper?

Palp Epigynum (ventral/dorsal)

Where is Hammerjawed Jumper found?
FeatureDetails
HabitatOften found on low-growing broadleaf plants in open wooded areas. (jb)
RangeMassachusetts west to Minnesota and south to Florida and Texas as well as Arizona
What is the life cycle of a Hammerjawed Jumper?

Egg sacs typically contain around 25 eggs. Sexually dimorphism occurs very early.

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

Photo credits: Contributed by tom murray; Additional contributions by Jay Barnes , cheins , Dick Walton. Contributors retain copyright over their individual contributions.