Tychiorhinus porrectus Wollaston, 1877
Taxonomy & Nomenclature
Conservation Status
Missing (Mendel et al., 2008/2013; Fowler et al., 2025)
Last record: 1875 (specimens) (Wollaston 1877); 1876 (seen) (Fowler 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:
Wollaston, T. V. (1877). Coleoptera Sanctae-Helenae. London: John Van Voorst.
Other references:
Decelle, J. and Voss, E. (1972). Curculionidae. In: Basilewsky, P. (Ed.). La faune terrestre de l'île de Sainte-Hélène. Deuxième partie. Annales du Musée Royal de l'Afrique Centrale, Zoologie. 192: 306-515.
Fowler, L., Stevens, N., Key, R., Peyton, J., Scipio-O'Dean, C.J., Sherwood, D., Sharp, A. & Wilkins, V.L. 2025. Tychiorhinus porrectus. The IUCN Red List of Threatened Species 2025: e.T66220682A68313413. https://dx.doi.org/10.2305/IUCN.UK.2025-1.RLTS.T66220682A68313413.en. Accessed on 07 August 2026.
Mendel, Howard, Ashmole, Philip and Ashmole, Myrtle. (2008/2013). Invertebrates of the Central Peaks and Peak Dale, St Helena. Report to the St Helena National Trust. 122pp. [originally published in 2008; taxonomy updated by David Pryce in 2013]