双边凹螺属

双边凹螺属（學名：Chamalycaeus）是一個热带有口蓋陸地蝸牛的属，带管蜗牛科的陸生腹足纲软体动物。 双边凹螺属舊屬環口螺科。2005年的《布歇特和洛克羅伊的腹足類分類》採納了Wenz (1938)對當時還是「山蝸牛亞科」的分類方法，將環口螺科分為多個族。過往在東亞及東南亞地區有不少被劃歸本屬的物種，現時都被重新劃歸其他分類，例如：後帶管蝸牛屬（Metalycaeus）。這些重新分類是基於以下兩個定義： Dicharax屬物種的整枚螺殼均沒有旋紋；而 後帶管蝸牛屬（Metalycaeus）的物種則只有其胎殼有旋紋。 截至2020年11月30日 (2020-11-30)[update]，WoRMS紀錄本屬包括下列各物種： Chamalycaeus andamaniae (Benson, 1861) Chamalycaeus armillatus (Benson, 1856) Chamalycaeus busbyi (Godwin-Austen, 1893) Chamalycaeus canaliculatus (Möllendorff, 1894) Chamalycaeus celebensis (Martens, 1891) Chamalycaeus everetti (Godwin-Austen, 1889) Chamalycaeus excisus (Möllendorff, 1887) Chamalycaeus fruhstorferi (Möllendorff, 1897) Chamalycaeus kessneri Vermeulen, 1996 Chamalycaeus microconus (Möllendorff, 1887) Chamalycaeus mixtus Zilch, 1957 Chamalycaeus nagaensis (Godwin-Austen, 1871) Chamalycaeus oglei (Godwin-Austen, 1914) Chamalycaeus perplexus (Godwin-Austen, 1914) Chamalycaeus rarus Páll-Gergely & Auffenberg, 2019 Chamalycaeus reinhardti (Mörch, 1872) Chamalycaeus reticulatus (Möllendorff, 1897) Chamalycaeus richthofeni (W. T. Blanford, 1863) Chamalycaeus sculptilis (Benson, 1856) Chamalycaeus specus (Godwin-Austen, 1889) Chamalycaeus subfossilis (P. Sarasin & F. Sarasin, 1899) Chamalycaeus sumatranus (Martens, 1900) Chamalycaeus tanghali (Godwin-Austen, 1914) Chamalycaeus troglodytes (B. Rensch, 1934) Chamalycaeus vulcani (W. T. Blanford, 1863) 以下物種舊屬本屬，但現時已被重新劃歸其他屬： 今屬Dicharax屬 微小双边凹螺 Dicharax diminutus Chamalychaeus expanstoma（英语：Chamalychaeus expanstoma）：見於日本 Chamalychaeus miyazakii（英语：Chamalychaeus miyazakii）：見於日本 Chamalychaeus takahashii（英语：Chamalychaeus takahashii） Chamalychaeus yanoshigehumii（英语：Chamalychaeus yanoshigehumii） 今屬後帶管蝸牛屬（Metalycaeus）： 范福扁带管蜗牛 粘液双边凹螺：見於重慶 拉氏双边凹螺 台湾扁带管蜗牛 Páll-Gergely, Barna; Bouchet, Philippe; Köhler, Frank; Bank, Ruud. Chamalycaeus Möllendorff, 1897. WoRMS. 2020-11-01 [2020-11-30] –通过WoRMS.  Wenz, Wilhelm August. Teil 1: Allgemeiner Teil und Prosobranchia. Schindewolf O. H. (编). Handbuch der Paläozoologie, Band 6, Gastropoda. Berlin: Verlag Gebrüder Bornträger. : xii + 1639 pp. （德语）.  Páll-Gergely, B.; Hunyadi, A.; Sang, D.D.; Naggs, F.; Asami, T. Revision of the Alycaeidae of China, Laos and Vietnam (Gastropoda: Cyclophoroidea) I: The genera Dicharax and Metalycaeus. Zootaxa. 2017, 4331 (1): 88,Figures 58–59, 60, 61. doi:10.11646/zootaxa.4331.1.1 （英语）.  Páll-Gergely, Barna; Sajan, S.; Tripathy, B.; Meng, K.; Asami, T.; Ablett, J.D. Genus-level revision of the Alycaeidae (Gastropoda: Cyclophoroidea), with an annotated species catalog. ZooKeys. 2020, (981): 1–220 [2020-12-01]. （原始内容存档于2020-12-03） （英语）.  Páll-Gergely, Barna. Dicharax diminutus (Heude, 1885). WoRMS. 2019-06-29 [2020-11-30] –通过WoRMS.  Heude, P.M. Notes sur les mollusques terrestres de la vallée du Fleuve Bleu. Mémoires de l' Histoire naturelle de l' Empire chinois. 1890, (1 (2): 2 + 1-87, pls. 12-21 [1882]; 1 (3): 89-132, pls. 22-32 [1885]; 1 (4): 125-188, pls. 33-43 [1890]): 96, plate 24, figs 5–5a [2020-11-30]. （原始内容存档于2021-01-11） （法语）.  Páll-Gergely B. Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O , 编. Metalycaeus hungerfordianus (Nevill, 1881). MolluscaBase. 2019-06-29 [2020-11-30] –通过WoRMS.