[eng] We present a genome assembly of 'Tethysbaena scabra' (Arthropoda; Crustacea; Malacostraca; Eumalacostraca; Peracarida; Thermosbaenacea; Monodellidae), a species endemic to Mallorca, Spain. The genome size is 1.18 gigabases that is scaffolded into 17 chromosomes plus a mitochondrial genome of 16,5 kilobases in length.