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© Rune Midtgaard

Taxonomy of the family Testudinidae
Bibliography of the genus Pyxis
Biodiversity of the family Testudinidae


Spider Tortoises



1827 Pyxis Bell (type species: Pyxis arachnoides Bell 1827)
1902 Acinixys Siebenrock (type species: Testudo planicauda Grandidier 1867; syn. Fritz & Havas 2006)
1950 Bellemys Williams [substitute name for Pyxis Bell 1827] (syn. Fritz & Havas 2006)
1972 Pyxoides Vuillemin & Domergue (type species: Pyxoides brygooi Vuillemin & Domergue 1972; syn. Fritz & Havas 2006)

Contents: 2 species, both of which are endemic.
Endemism: 0% 100%
Distribution: Madagascar.

Pyxis arachnoides

Madagascar Spider Tortoise

Gewöhnliche Spinnenschildkröte

Almindelig Edderkopskildpadde

1827 Pyxis arachnoides Bell
Testudo aranoides [lapsus] Gray in Griffith 1831
Bellemys arachnoides Williams 1950
1831 Pyxis madagascariensis Lesson (Fritz & Havas 2006)
1869 Pyxis arachnoidea var. oblonga Gray
1972 Pyxoides brygooi Vuillemin & Domergue
Pyxis arachnoides brygooi Bour 1979
1979 Pyxis arachnoides matzi Bour (Fritz & Havas 2006)

Other common names:
arachnoides: Common Spider Tortoise
brygooi: Northern Spider Tortoise
oblonga: Southern Spider Tortoise
Distribution: Madagascar.

Pyxis arachnoides
© Rune Midtgaard

Pyxis planicauda

Flat-shelled Spider Tortoise, Madagascar Flat-shelled Tortoise, Flat-backed Spider Tortoise, Madagascar Flat-backed Tortoise, Malagasy Flat-tailed Tortoise


Fladrygget Edderkopskildpadde

1867 Testudo planicauda Grandidier
Acinixys planicauda Siebenrock 1902
Pyxis planicauda Bour 1979
1972 Testudo morondavensis Vuillemin (Fritz & Havas 2006)

Distribution: Madagascar.