Description
Orthalicus reses is a snail with a large, conical shell that is approximately 45 to 55 mm in length. The thickness of the shell varies, but is usually more lightweight and translucent than other species of Orthalicus. The external ground color of the shell is white to buff, with three poorly developed spiral bands and several flame-like purple-brown axial stripes that stop at the lower of the spiral bands. The axial stripes are typically narrower than their whitish interspaces and do not fork near the upper suture. There are two to three white apical whorls. The last whorl contains two to four darker brown growth-rest varices. The columella and parietal callus are white or faint chestnut brown.
The nominate subspecies Orthalicus reses reses is distinguished from the supposed subspecies Orthalicus reses nesodryas by the lighter color pattern of the apical whorl, columella, and parietal callus. These characteristics are chestnut-brown or darker in Orthalicus reses nesodryas.
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