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Map of type locality of Cryptosemelus niger S. Tumpeesuwan & C. Tumpeesuwan, sp. nov.
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Cryptosemelus niger S. Tumpeesuwan & C. Tumpeesuwan, sp. nov. Photograph by Kitti Tanmuangpak A shell morphology of holotype NHMSU-00054 B living snail.
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Cryptosemelus niger S. Tumpeesuwan & C. Tumpeesuwan, sp. nov. Living snail in natural habitats. Photograph by Chanidaporn Tumpeesuwan 12 December 2018 A C. niger crawling on soil in limestone crevice (white circle) B close-up view in living position C, D semislug was moved to green leaf for taking photo C left side represents left shell lobe (lsl) D right side represents right shell lobe (rsl), left shell lobes (lsl), and left dorsal lobe (ldl).
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Genital system of Cryptosemelus niger S. Tumpeesuwan & C. Tumpeesuwan, sp. nov. (paratype NHMSU-00055) A photograph and B drawing by Kitti Tanmuangpak.
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Radula morphology of Cryptosemelus niger S. Tumpeesuwan & C. Tumpeesuwan, sp. nov. (paratype NHMSU-00055) A radula plate, teeth rows arranged in wide V-shape B close-up view of middle part of radula C close-up view of right side of radula D close-up view of right side of radula showing marginal teeth. Central teeth indicated by ‘C’; lateral teeth indicated by ‘L’; marginal teeth indicated by ‘M’.