Tetragnatha paschae Berland, 1924:421

Rapa Nui long-jawed spider



Taxonomy & Nomenclature



Conservation Status


Last record: 1925 (Cotoras et al., 2017a)


Described on the basis of a female specimen (Berland, 1924), with three females (and an immature male that may represent the species) collected the next year by P. H. Johnson (Pacific expedition of the S.Y. Saint George) (Cotoras et al., 2017a). No further record of the species has been made, despite a series of surveys (1993; August 2008; June-July 2009; August 2011; August-September 2012; November 2018) of the island's arachnids failed to record it (Baert et al., 1997; Cotoras et al., 2017a,b; Anonymous, n.d.).



Rapa Nui (=Easter Island)


Biology & Ecology




Only three or four preserved specimens appear to still exist, with an immature male (the fourth specimen?) unable to be asigned to the species (Cotoras et al., 2017a). 






Original scientific description:

Berland, L. (1924). Araignées de l’île de Pâques et des îles Juan Fernandez, pp. 419-437. The Natural History of Juan Fernandez and Easter Island. Volume 3. Almqvist & Wiksells Boktryckeri AB, Uppsala.


Other references:

Anonymous. (n.d.). Ficha FINAL 17mo Proceso RCE: Tetragnatha paschae Berland, 1924. Report. 5 pp.

Baert, L., Lehtinen, P. and Desender, K. (1997). The spiders (Araneae) of Rapa Nui (Easter island). Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, Entomologie 67: 9-32.

Cotoras, Darko D. et al. (2017a). Ancient DNA Resolves the History of Tetragnatha (Araneae, Tetragnathidae) Spiders on Rapa Nui. Genes 8(12): 403.

Cotoras, Darko D., Wynne, J. Judson, Flores-Prado, Luis and Villagra, Cristian. (2017b). The Spiders of Rapa Nui (Easter Island) Revisited. Bishop Museum Occasional Papers 120: 1-17.


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