Amphidromus placostylus is a species of large-sized air-breathing tree snail, an arboreal gastropod mollusc in the family Camaenidae.
Description The length of the shell attains 70 mm, its diameter 41 mm.
(Original description in Latin) The dextral shell is not rimate (without an umbilicus). It presents an ovate-oblong shape and a solid structure. Its surface appears slightly plicate-striate (with fold-like striations) and olive-brown, broadly brown-streaked. The spire is moderately elevated for the genus, exhibiting a ventricose-conoidal (swollen and cone-shaped) form. Comprising six and three-quarter somewhat convex whorls, it shows an impression behind the margined suture. The body whorl is rather convex and almost equals four-sevenths of the shell's height. The aperture is moderately oblique and ample, somewhat ear-shaped. The peristome appears rather broadly expanded and reflected, and thickly lipped. The columella is somewhat straight and striated, forming an obtuse angle with the basal margin and being appressed with a broad callus.
Distribution Amphidromus placostylus is known to inhabit Central Vietnam, Gia Lai Province, K'bang District.
Habitat Amphidromus placostylus are generally found in trees or areas with a high tree density.
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