Shim, E.; Sim, C. (2011). A New Species of the Genus Tetilla (Spirophorida: Tetillidae) from Korea. Korean Journal of Systematic Zoology. 27(1): 101-103.
A new species in the genus Tetilla, Tetilla hwasunensis n. sp. was collected from Hwasun Harbor, Jejudo Island in 2009. This species differs from T. serica its lack of spherules and from T. radiate by having sigmaspires. Description and figures of the new species are provided.