Orsonwelles torosus (Simon)

Waimea Sheet Weaver (Orsonwelles torosus)

The Waimea Sheet Weaver is known only from a single, female specimen, that was collected in the 1890’s years by the famous R. C. L. Perkins, a British entomologist, noted for his work on the invertebrate fauna of the Hawaiian Islands.

This sole specimen is labelled only with the place name ‘Waimea’, a name that can be found on several of the Hawaiian Islands, however, it is very likely that the spider came from the Waimea region on the island of Kaua’i.

The Waimea Sheet Weaver was never found again, and is now considered most likely extinct.


Specimens, that were collected on the neighbor islands of Hawai’i, Maui, Moloka’i, and O’ahu, and which formerly were assigned to this species, were subsequently recognized and described as distinct species.



[1] Gustavo Hormiga: Orsonwelles, a new genus of giant linyphiid spiders (Araneae) from the Hawaiian Islands. Invertebrate Systematics 16. 369-448. 2002



Depiction from: ‘Fauna Hawaiiensis; being the Land-Fauna of the Hawaiian Islands. by various Authors, 1899-1913. Cambridge [Eng.]: The University Press 1913’


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