User:Leo Breman/sandbox

Evasterias is a starfish native to the Pacific coasts of Far East Russia, Canada and the United States.

The genus was first described by Addison Emery Verrill in 1914, with Evasterias troschelii as the type species. The description of this species was first published in 1862 by William Stimpson under the name Asterias troschelii. The holotype was collected in Puget sound, Washington. Verrill also published E. acanthostoma in 1914, now seen as a synonym of E. troschelii.

Description
These starfish have five arms. They have planktonic larvae. The species may exhibit brooding behaviour. Djakonov found it to be the most similar to Asterias rollestoni.

Species
As of 2019, four species are accepted in the World Register of Marine Species by Christopher Mah:
 * Evasterias derjungini (Djakonov, 1938)
 * Evasterias echinosoma Fisher, 1926
 * Evasterias retifera Djakonov, 1938
 * Evasterias troschelii (Stimpson, 1862)