Bonapruncinia sanctaehelenae Benoit, 1977

Napoleon's crab spider



Taxonomy & Nomenclature

Synonym/s: Bonapruncinia sanctae-helenae Benoit, 1977


Conservation Status


Last record: 26 November 1965 (White et al., 2019)

IUCN RedList status: Critically Endangered (Possibly Extinct)


Not found during surveys in 1967, 2003 and 2012 (Ashmole & Ashmole, 2004a,b; Cairns-Wicks & Lambdon, 2013; White et al., 2019).



Prosperous Bay Plain (southern), eastern St. Helena


Biology & Ecology




Only known from two juvenile females (White et al., 2019).






Original scientific description:

Benoit, P. L. G. (1977). Fam. Thomisidae. In La faune terrestre de l'île de Saite-Hélène IV. Annls Mus. r. Afr. cent. (Zool.-Ser. 8°) 220: 82-87.


Other references:

Ashmole, Philip, and, Ashmole, Myrtle. (2004a). The invertebrates of Prosperous Bay Plain, St Helena: A survey, by Philip and Myrtle Ashmole, September – December 2003. Commissioned by the St Helena Government and financed by the Foreign and Commonwealth Office. Peebles, Scotland: Kidston Mill.

Ashmole, Philip, and, Ashmole, Myrtle. (2004b). Guide to Invertebrates of Prosperous Bay Plain, St Helena and Illustrated account of species found on the Eastern Arid Area (EAA), including Prosperous Bay Plain, Holdfast Tom and Horse Point Plain. Peebles, Scotland: Kidston Mill. 92 pp. [automatic download]

Cairns-Wicks, Rebecca and Lambdon, Phil. (2013). Habitat survey report: Dry Gut and the southern ridge of Prosperous Bay Plain. Final Report. Commissioned by St Helena Government.

White, L., Pryce, D., Wilkins, V. L. and Dutton, A.-J. (2019). Bonapruncinia sanctaehelenae. The IUCN Red List of Threatened Species 2019: e.T65881343A67528211. Accessed on 08 March 2023.


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