The species belong to the curinii complex. The shell is similar to that of alboranensis with prosocline striae absent between the cords. « Basal cord rounded and divided by one or two fine threads, generally the upper one more pronounced, resulting in parallel cordlets » – Smriglio, Di Giulio & Mariottini: “Description of two new Jujubinus species (Gastropoda: Trochidae) from the Sicily Channel, with notes on the Jujubinus curinii species complex”, Zootaxa 3815(4), p.586. The yellow spiral bands of alboranensis are lacking, as well as the large dark blotches on the periphery. The subsutural ramp is larger, giving the shell a turriculate appearance, especially in fully adult specimens.
 
« The species name is after Piergiorgio Trillò, friend and scuba diver who provided the marine sediment in which the new species was found » – Ibid.
 
Above, the holotype MNHN-IM-2000-25882 in the collection of the Muséum national d’Histoire naturelle, Paris. 25m deep, Talbot Bank, Sicily Channel. 4,2-5,4mm. Original pictures provided by M. Caballer for the MNHN – (CC BY).