Sechelleptus arborivagus sp. nov., a new arboreal spirostreptid millipede (Diplopoda, Spirostreptidae) endemic to Mayotte Island (Comoros Archipelago), Indian Ocean

A new millipede species of the genus Sechelleptus Mauriès, 1980 is described and illustrated from Mayotte Island, Indian Ocean. This species, S. arborivagus sp. nov., found on trees, looks particularly similar to sympatric variabilis VandenSpiegel & Golovatch, 2007, but much larger has a very different ecological behavior. Phylogenetic analyses based concatenated dataset COI 16S rRNA genes including nine Spirostreptidae (including Sechelleptus, Doratogonus Attems, 1914, Bicoxidens 1928 Spirostreptus Brandt, 1833), strongly support monophyly Sechelleptus. Despite similarity their genitalia, molecular also reveal clear-cut genetic divergence between nov. (22.55% for 6.63% 16SrRNA) further suggest presence higher diversity within Mayotte.