Haploptychius

Haploptychius is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Streptaxidae.

Distribution
The distribution of the genus Haploptychius includes:
 * Andaman Islands and south India
 * South-East Asia
 * southern and central China
 * North Sulawesi

Species
Species within the genus Haploptychius include:
 * Haploptychius anceyi (Mabille, 1887)
 * Haploptychius andamanicus (Benson, 1860)
 * Haploptychius anhduongae Thach, 2017
 * Haploptychius bachmaensis Bui & Do D.S., 2019
 * Haploptychius blaisei (Dautzenberg & Fischer, 1905)
 * Haploptychius bourguignati (Mabille, 1887)
 * Haploptychius burmanicus (Blanford, 1864)
 * Haploptychius celebicus (P. Sarasin & F. Sarasin, 1899)
 * Haploptychius costulatus (Möllendorff, 1881)
 * Haploptychius deflexus (Souleyet, 1852)
 * Haploptychius diespiter (Mabille, 1887)
 * Haploptychius dorri (Dautzenberg, 1893)
 * Haploptychius fagoti (Mabille, 1887)
 * Haploptychius fischeri (Morlet, 1887)
 * Haploptychius juedelli Yen, 1939
 * Haploptychius juttingae van Bruggen, 1972
 * Haploptychius nautilus (P. Sarasin & F. Sarasin, 1899)
 * Haploptychius occidentalis (Heude, 1885)
 * Haploptychius pachychilus (Möllendorff, 1884)
 * Haploptychius pellucens (Pfeiffer, 1863)
 * Haploptychius perlissus Vermeulen, Luu, Theary & Anker, 2019
 * Haploptychius pfeifferi (Zelebor, 1867)
 * Haploptychius porrectus (Pfeiffer, 1863)
 * Haploptychius sahyadriensis (Bhosale, Thackeray and Yadav, 2022)
 * Haploptychius sinensis (Gould, 1859)
 * Haploptychius sinuosa (L. Pfeiffer, 1861)