Napometa trifididens (O.P.-Cambridge, 1873)
Three-spined peaks orb weaver
Taxonomy & Nomenclature
Synonyms: Linyphia trifididens O. P.-Cambridge, 1873; Enoplognatha trifididens Simon, 1894
Conservation Status
Missing (Sherwood et al., 2025)
Last record: December 1965 (Sherwood et al., 2025)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Distribution & Habitat
St Helena, South Atlantic Ocean
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Pickard-Cambridge, O. (1873). On the spiders of St Helena. Proceedings of the Zoological Society of London 1873: 210-227, pl. 24.
Other references:
Ashmole, N. P. and Ashmole, M. J. (2000). St Helena and Ascension Island: A Natural History. Anthony Nelson, Oswetry, Shropshire.
Cairns-Wicks, R., Jervois, M. and Kindemba, V. (2016). St. Helena Invertebrate Conservation Strategy 2016-2021. St. Helena National Trust, Environmental Management Division of St. Helena Government, and Buglife.
Key, R. (2014). Non-indigenous Animal Taxa on St Helena: likely effects on endemic and indigenous invertebrates and their habitats and possible control measures. Saint Helena National Trust.
Melliss, J. C. (1875). St Helena: A physical, historical and topographical description of the Island including its geology, fauna, flora and meteorology. Reeve, London.
Mendel, H., Ashmole, N. P. and Ashmole, M. J. (2008). Invertebrates of the Central Peaks and Peak Dale, St Helena. Commissioned by the St Helena National Trust, Jamestown, St Helena.
Sherwood, D., Fowler, L., Stevens, N., Peyton, J., Scipio-O'Dean, C. J., Sharp, A., Pryce, D., White, L. and Wilkins, V. L. (2025). Napometa trifididens. The IUCN Red List of Threatened Species 2025: e.T66183629A67528250. https://dx.doi.org/10.2305/IUCN.UK.2025-2.RLTS.T66183629A67528250.en. Accessed on 06 August 2026.
Sherwood, D., Henrard, A., Jocqué, R., Fowler, L., Marusik, Y. M., Maddison, W., Harvey, M. S., Hormiga, G., Rheims, C. A., Piacentini, L. N., Peters, M., Stevens, N., Joshua, D., Scipio-O’Dean, C. J., Ellick, G., Wilkins, V., Ashmole, M. and Ashmole, P. (2024). Annotated checklist of the spiders of Saint Helena, with new records, descriptions of unknown sexes, new and restored genera, and two new species (Araneae: Araneomorphae). Arachnology 19(9): 1218-1291. https://doi.org/10.13156/arac.2024.19.9.1218
St Helena Government. (2019). The Peaks National Park Conservation Management Plan 2019-2024.
St Helena National Trust and St Helena Government. (2023). St Helena’s Terrestrial Invertebrate Conservation Strategy 2023-2028.
Van Helsdingen, P. J. (1977). Linyphiidae. In: Basilewsky, P. (ed.). La faune terrestre de l'île de Sainte-Hélène. Quatrième partie. Annales du Musée Royal de l'Afrique Centrale, Zoologie. 220: 168-183.