Steginoporella triangularis is found in the Gulf of Aden. The SEM image is kindly provided by Ann-Margret Amui.

Original description: Steginoporella triangularis Amui & Kaselowsky, 2006
Locality: Gulf of Aden
Holotype: SMF 1826; Paratypes: SMF 1910, SMF 1909, SMF 1905-1906