Xanthonychidae

Xanthonychidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.^[2]

Xanthonychidae
Averellia desidens shell
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Superfamily:	Helicoidea
Family:	Xanthonychidae Strebel & Pfeffer, 1879[1]
Type genus
Xanthonyx
Synonyms[2]
Epiphragmophoridae Hoffmann, 1928

This family is within the superorder Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

2017 taxonomy

The family Xanthonychidae consists of the following subfamilies:

• Echinichinae F.G. Thompson & Naranjo-García, 2012
• Epiphragmophorinae Hoffmann, 1928
• Helminthoglyptinae Pilsbry, 1939
• Humboldtianinae Pilsbry, 1939
• Lysinoinae Hoffmann, 1928
  • tribe Lysinoini Hoffmann, 1928
  • tribe Leptariontini H. Nordsieck, 1987 - synonym: Tryonigentinae Schileyko, 1991
  • tribe Metostracini H. Nordsieck, 1987
• Metostracinae H. Nordsieck, 1987: synonym of Metostracini H. Nordsieck, 1987 (original rank)
• Monadeniinae H. Nordsieck, 1987
• Xanthonychinae Strebel & Pfeffer, 1879

Trichodiscininae H. Nordsieck, 1987: belongs to the family Trichodiscinidae H. Nordsieck, 1987

Lysinoidae may be treated as a separate family with subfamilies Leptariontinae, Lysinoinae and Metostracinae.^[3]

Genera

Trichodiscina critina shell

Genera in the family Xanthonychidae include:

Subfamily Echinichinae F.G. Thompson & Naranjo-García, 2012

• Echinix F.G. Thompson & Naranjo-García, 2012

Subfamily Epiphragmophorinae Hoffmann, 1928

• Angrandiella Ancey, 1886
• Dinotropis Pilsbry & Cockerell, 1937
• Doeringina Ihering, 1929
• Epiphragmophora Doering, 1875
• Karlschmidtia F. Haas, 1955
• Minaselates Cuezzo & Pena, 2017
• Pilsbrya Ancey, 1887

subfamily Helminthoglyptinae Pilsbry, 1939

Subfamily Humboldtianinae Pilsbry, 1939

• Tribe Bunnyini H. Nordsieck, 1987
  • Bunnya H. B. Baker, 1942
• Tribe Humboldtianini Pilsbry, 1939
  • Humboldtiana Ihering, 1892

Subfamily Lysinoinae Hoffmann, 1928

• Tribe Leptariontini H. Nordsieck, 1987
  • Leptarionta Crosse & P. Fischer, 1872^[4]
  • Semiconchula Naranjo-Garcia & Polaco, 2000
  • Tryonigens Pilsbry, 1927
• Tribe Lysinoini Hoffmann, 1928
  • Lysinoe H. Adams & A. Adams, 1855
• Tribe Metostracini H. Nordsieck, 1987
  • Cryptostrakon W.G. Binney, 1879^[4]
  • Metostracon Pilsbry, 1900

Subfamily Monadeniinae H. Nordsieck, 1987

• Monadenia Pilsbry, 1895

Subfamily Xanthonychinae Strebel & Pfeffer, 1879

• Xanthonyx Crosse & P. Fischer, 1867 - the type genus of the family Xanthonychidae^[5]