Parvulastra
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Parvulastra is a genus of starfish belonging to the family Asterinidae. The species of this genus are found in Southern Hemisphere.
The genus shows an unusual reproductive mode within Asterinidae: Parvulastra parvivipara and Parvulastra vivipara are viviparous. Prior to their description as distinct species, they were considered variants of Parvulastra exigua, which has free-living (but non-feeding) larvae.
Species
There are five species:
- Parvulastra calcarata (Perrier, 1869)
- Parvulastra dyscrita (H.L. Clark, 1923)
- Parvulastra exigua (Lamarck, 1816)
- Parvulastra parvivipara (Keough & Dartnall, 1978)
- Parvulastra vivipara (Dartnall, 1969)