Tag Archives: Maré

Leucocharis loyaltiensis (Souverbie)

Mare Landsnail (Leucocharis loyaltiensis)

The Mare Landsnail was described in 1879; it was endemic to the island of Maré in the Loyalty Islands, New Caledonia.

The shells reach sizes of about 2.9 to 3.2 cm in height; they are fusiform, thin, greyish white with sparsely scattered translucent grey dots, spots or streaks, bordered on the left with opaque white, the surface is shining, lightly striate and inconspicuously grooved spirally; the aperture is oblong-ovate, white within, the peristome is expanded and white, the columella is dilated above and has a weak entering fold.

The species appears to be extinct now.

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syn. Bulimus loyaltyensis Souverbie

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Depiction from: ‘George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second series: Pulmonata. Vol 13: Australasian Bulimulidae: Bothriembryon, Placostylus. Helicidae: Amphidromus. 1900′

(public domain)

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References:

[1] George W. Tryon; Henry A. Pilsbry; a.o.: Manual of Conchology. Second series: Pulmonata. Vol 13: Australasian Bulimulidae: Bothriembryon, Placostylus. Helicidae: Amphidromus. 1900

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edited: 17.02.2024

Turdus mareensis Layard & Tristram

Mare Island Thrush (Turdus mareensis)  

This species is still considered as a subspecies of the Island Thrush (Turdus poliocephalus Latham), an assessment, that, in a biogeographical view, makes absolutely no sense – hence I treat it as a distinct species.  

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The Mare Island Thrush inhabited the island of Maré, one of the New Caledonian Loyalty Islands.  

The birds were about 23 cm long, and, apart from the white-spotted undertail-coverts, almost completely blackish brown in color. They inhabited all of the forest types of the island, including those in the islands interior as well as those near beaches, and they fed on insects and small reptiles as well as on fruits.  

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The Mare Island Thrush obviously died out after cats had been released on the island, an exact extinction date is not known, according to which source dates from 1875 to 1912 can be found.  

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syn. Merula mareensis Layard & Tristram, Merula mareensis ssp. larochensis Sarasin, Turdus poliocephalus ssp. mareensis Layard & Tristram

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Depiction from: ‘Henry Seebohm; R. Bowdler Sharpe: A Monograph of the Turdidae or family of thrushes. London: Henry Sotheran 1902’

(public domain)  

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References:  

[1] Dieter Luther: Die ausgestorbenen Vögel der Welt. Westarp Wissenschaften 1986 
[2] Peter Clement; Ren Hathaway: Thrushes. Christopher Helm Publishers Ltd 2000 
[3] David W. Steadman: Extinction and Biogeography of Tropical Pacific Birds. University of Chicago Press 2006 
[4] H. Douglass Pratt: Revisiting species and subspecies of island birds for a better assessment of biodiversity. Ornithological Monographs 67: 79-89. 2010  

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edited: 29.11.2018