Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Anoplodactylus monotrema Stock, 1979

araña de mar, Sea spider

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Arthropoda

Class
Pycnogonida

Order
Pantopoda

Suborder
Eupantopodida

Superfamily
Phoxichilidoidea

Family
Phoxichilidiidae

Genus
Anoplodactylus

Species
monotrema

Taxon category: Accepted

Origin: Introduced - established

Introduction

Year of first record: 1934

Mode of introduction: Accidental

Introduction Pathway: Stowaway

Subpathway: Ship ballast water

Introduced status: Naturalized

Invasive status: Under watch

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

References

  • Carlton, J. T. Keith, I., & Ruiz, G. M. (2019) Assessing marine bioinvasions in the Galápagos islands: Implications for conservation biology and marine protected areas. Aquatic Invasions, 14(1), 1–20. https://doi.org/10.3391/ai.2019.14.1.01
  • GBIF Secretariat (2021) GBIF Backbone Taxonomy. Https://doi.org/10.15468/39omei Accessed via https://www.gbif.org/species/5284517
  • Horton, T. Horton, T., Kroh, A., Ahyong, S., Bailly, N., Boyko, C. B., Brandão, S. N., Gofas, S., Hooper, J. N. A., Hernandez, F., Holovachov, O., Mees, J., Molodtsova, T. N., Paulay, G., Decock, W., Dekeyzer, S., Poffyn, G., Vandepitte, L., Vanhoorne, B., Adlard, R., ... Zhao, Z. (2021) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ.

You are welcome to download and use the information found in this page, acknowledging its source.

This page should be cited as follows:

"Galapagos Species Database, Anoplodactylus monotrema", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=9313. Accessed 3 April 2026.