Actinonaias

Actinonaias is a genus of freshwater mussels in the family Unionidae.

Taxonomy and history

Actinonaias was first described as a subgenus of Unio in 1894 by Joseph Charles Hippolyte Crosse and Paul Henri Fischer, with Unio sapotalensis as the type species. The name Actinonaias is derived from the Greek words , meaning "ray", and , meaning "naiad".

The genus is now placed within the subfamily Ambleminae and tribe Lampsilini. Seven species are currently recognised.

Species

This genus includes the following species:

• Actinonaias computata <small>(Crosse & Fischer, 1894)</small>
• Actinonaias coyensis <small>(Pilsbry, 1910)</small>
• Actinonaias medellina <small>(Lea, 1838)</small>
• Actinonaias moctezumensis <small>(Pilsbry, 1910)</small>
• Actinonaias sapotalensis <small>(Lea, 1841)</small>
• Actinonaias signata <small>(Pilsbry, 1910)</small>
• Actinonaias undivaga <small>(Pilsbry, 1910)</small>

Species formerly placed in this genus include:

• Actinonaias carinata <small>(Barnes, 1823)</small>, Actinonaias gibba <small>(Simpson, 1900)</small>, and Actinonaias ligamentina <small>(Lamarck, 1819)</small> – now accepted as Ortmanniana ligamentina <small>(Lamarck, 1819)</small>
• Actinonaias ellipsiformis <small>(Conrad, 1836)</small> – now accepted as Venustaconcha ellipsiformis <small>(Conrad, 1836)</small>
• Actinonaias pectorosa <small>(Conrad, 1834)</small> – now accepted as Lampsilis pectorosa <small>(Conrad, 1834)</small>
• Actinonaias rafinesqueana <small>(Frierson, 1927)</small> – now accepted as Lampsilis rafinesqueana <small>Frierson, 1927</small>
• Actinonaias walkeri <small>Baker, 1922</small> – now accepted as Disconaias fimbriata <small>(Frierson, 1907)</small>

References