Botrylloides pizoni, a new species of Botryllinae (Ascidiacea) from the Mediterranean Sea
Dr. Riccardo Brunetti
Dr. Francesco Mastrototaro
Photographer: Dr. Rossella Baldacconi
Living specimens are mainly violet or from lilac to violet in colour, but red and orange colonies were also found.
The colonies are often lobed, and in the eutrophic waters of the collection site; they may reach large dimensions (several square decimetres) and thicknesses of up to 2-3 cm.
Zooids are cylindrical in shape and up to 4 mm long.
It is difficult to establish whether Botrylloides pizoni is native or an invader.
The species is named after Antoine Pizon—the great French zoologist author of the fundamental work on the blastogenesis of the botryllids (1893).