Less than 30 years ago, an isolated population of thwe dwarf pill millipede genus Trachysphaera was discovered on the English Isle of Wight, which were tentatively identified as T. lobata (Ribaut, 1954), albeit male specimens were lacking (Joes & Keay 1986 ). T. lobata is a species known mainly from SE France (Kime & Enghoff 2011), and is difficult to distinguish from four other little known Trachysphaera species occurring at the Spanish-French border, which are above all the very similar T. pyrenaica (Ribaut, 1907), as well as the little known T. rousseti (Demange, 1959), T.