Similis (L.) resembling, similar. The specific name relates to the similarity of the species to S. intermedius.
Mackie, Andrew S. Y. 1987. A review of species currently assigned to the genus Leitoscoloplos Day, 1977 (Polychaeta: Orbiniidae), with descriptions of species newly referred to Scoloplos Blainville, 1828. Sarsia, 72: 1-28. (look up in IMIS)