Lyropupa lyrata ssp. lyrata (Gould)

Fiddle-shaped Lyropupa Snail (Lyropupa lyrata ssp. lyrata)

This species was described in 1843; it was originally found to be very abundant in the Ko’olau Mountains on the island of O’ahu, Hawaiian Islands.

The shells reach heights of about 0.25 cm; they are described as being small, most generally sinistral, chestnut colored, widely umbilicate and having five convex whorls with about 20 neatly clathrate flexuous riblets; the aperture is somewhat orbicular, bell-shaped, posteriorly armed with two lamella-like teeth and two additional ones in the throat. [1]

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The variations and races of lyrata will not be understood until specimens from a large number of places are opened for study of the palatal folds. It will probably be found necessary to recognize a number of local races.” [1]

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According to a study from the year 2018, all Hawaiian species of this genus are now sadly extinct. [2]

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Depiction from: ‘George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second Series: Vol.25, Pupillidae (Gastrocoptinae, Vertigininae) 1918-1920’

(public domain)

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References:   

[1] George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second Series: Vol.25, Pupillidae (Gastrocoptinae, Vertigininae) 1918-1920
[2] Norine W. Yeung; Kenneth A. Hayes: Biodiversity and extinction of Hawaiian land snails: how many are left now and what must we do to conserve them – a reply to. Integrative and Comparative Biology 58(6): 1157-1169. 2018

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edited: 25.02.2024