Tag Archives: Rimatara

Curculionidae gen. & sp. ‘Rimatara’

Rimataran Cossonine Weevil(s) (Curculionidae gen. & sp.)

The weevils (Curculionidae) are in fact the most species-rich family of the whole animal kingdom, the family is divided into several subfamilies of which the Cossininae is one.

***

The subfossil record of the island of Rimatara, Austral Islands has produced the remains of at least 18 (!) genera/species of cossinine weevils, this shows how species-rich the island faunas once, before the arrival of humans, were … and, how much has already been lost.

The remains are currently under review by Nick Porch, an Australian entomologist specialized in subfossil insect remains.

*********************

edited: 31.10.2020

Tubuaia voyana ssp. oromanaensis Kondo

Oromana Tubuaia Snail (Tubuaia voyana ssp. oromanaensis)

The Oromana Tubuaia Snail was described in 1962; it was only ever known from its type locality, the Oromana Hills on the island of Rimatara in the Austral archipelago, a place that today is completely degraded and transformed into agricultural fields (like actually most of the island).

This snail is now clearly extinct. [1]

*********************

References:

[1] Olivier Gargominy; Benoît Fontaine: A Global Overview of the Terrestrial and Freshwater Molluscs. In: Jean-Yves Meyer; Elin. M. Claridge: Biodiversity of the Austral Islands, French Polynesia. Muséum national d´Histoire naturelle, Paris. 55-91. 2014

*********************

edited: 02.05.2022

Myoporum rimatarense F. Br.

Rimatara Myoporum (Myoporum rimatarense)  

This species, described in 1935, is known only from the type, collected at the beach near the village of Amaru on the island of Rimatara in the Austral Archipelago.  

The material is sufficient enough to prove that this is indeed a distinct species that differs from the other two Myoporum species that are known to occur on the Austral Archipelago (Myoporum rapense F. Br. and Myoporum stokesii F. Br.).  

The species is considered extinct. [1]  

*********************  

References:  

[1] R. J. Chinnock: Eremophila and Allied Genera: A Monograph of the Plant Family Myoporaceae. Rosenberg Pub. 2007  

*********************  

edited: 23.09.2017

Samoana sp. ‘Rimatara’

Rimatara Samoana Snail (Samoana sp.)

This form is known only on the basis of subfossil material that hasn’t been described so far; nevertheless, it might very well represent a distinct species, endemic to the island of Rimatara, and now extinct. [1]

*********************

References:

[1] Olivier Gargominy; Benoît Fontaine: A Global Overview of the Terrestrial and Freshwater Molluscs. In: Jean-Yves Meyer; Elin. M. Claridge: Biodiversity of the Austral Islands, French Polynesia. Muséum national d´Histoire naturelle, Paris. 55-91. 2014

*********************

edited: 04.06.2021