Lim, S.-C.; Setiawan, E. (2021). A new Semperella (Hexactinellida: Amphidiscosida: Pheronematidae) from Indonesia, Indian Ocean. Raffles Bulletin of Zoology. Suppl. 36: 23-28.
A new Semperella species, Semperella sjades, from the Indian Ocean off the south coast of Java (Indonesia) is described. The new sponge species is the largest Semperella species described to date, measuring 100 cm in length. Besides its size, it is distinct in having a rounded columnar body exhibiting two different sides: one with mainly atrial areas and the other with mainly dermal areas. It is also distinct in having three types of micropentactins exhibiting: 1) all regular rays; 2) one rudimentary ray; 3) and two rudimentary rays.