Terralonus californicus

Terralonus californicus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Salticidae
Genus: Terralonus
Species:
T. californicus
Binomial name
Terralonus californicus
(Peckham & Peckham, 1888)

Terralonus californicus, the intertidal jumping spider or beach jumping spider, is a species of jumping spider in the family Salticidae.[1][2] The species is found in North America, ranging from coastal regions along the Pacific ocean from southern British Columbia to Baja California.[3][4][5][6] It is one of the few spiders known to regularly inhabit beaches, being found alongside sandy coastlines and intertidal zones. In this environment these spiders prey upon other beachside inhabiting arthropods, likely those that are drawn towards debree that has washed along shorelines. Such arthropods can include beach hopper amphipods and flies. Both males and females have varied mixed colorations of typically black, gray and tan which help with camoflouge in their beachside environments. Sizes range from 3 to 5 millimeters in length. Physically this species appears similar to other members in its genus Terralonus, so its environmental context of being found in beaches is its primary identification measure.[7][8] Males possess elongated forelimbs compared to females, which are used both in territorial aggression towards other males and as displays in courtship towards females.[9]

References

  1. ↑ January; 2023 - 7:31pm. "Species Terralonus californicus". www.bugguide.net. Retrieved 2026-06-20.{{cite web}}: CS1 maint: numeric names: authors list (link)
  2. ↑ "Terralonus californicus". www.gbif.org. Retrieved 2026-06-20.
  3. ↑ "Terralonus californicus Report". Integrated Taxonomic Information System. Retrieved 2019-09-25.
  4. ↑ "Terralonus californicus". GBIF. Retrieved 2019-09-25.
  5. ↑ "Terralonus californicus". NMBE World Spider Catalog. Retrieved 2019-09-25.
  6. ↑ "Terralonus californicus (Intertidal Jumping Spider): Identification, Facts, and Taxonomy". Bugs With Mike. 2026-04-29. Retrieved 2026-06-20.
  7. ↑ "Beach-dwelling jumping spider (Terralonus californicus)". Picture Insect. Retrieved 2026-06-20.
  8. ↑ Hentschel, Devin. "SEXUAL DIMORPHISM IN FORELIMB LENGTHS OF INTERTIDAL JUMPING SPIDERS (Terralonus californicus) AND IMPLICATIONS FOR CURRENT THEORY ON ALLOMETRIC PATTERNS AND TRAIT FUNCTION". dspace.library.uvic.ca. Retrieved 2026-06-20.
  9. Adams, R.J. (2014). Field guide to the spiders of California and the Pacific coast states. University of California Press.
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Further reading

  • Wikimedia Commons logo Media related to Terralonus californicus at Wikimedia Commons