Fine sculpture of the prozonite in the families Ammodesmidae, Cryptodesmidae, Cyrtodesmidae, Haplodesmidae, Oniscodesmidae and Pyrgodesmidae 1 Elassystremma sp. 2 Elythesmus enghoffi, 3 cyrtodesmid sp. 4 Prosopodesmus jacobsoni 5 Amphitomeus attemsi 6 Rharodesmus tabarkensis. Abbreviations: a anterior part of the prozonite, b posterior part of the prozonite, r ridge, s spherical knobs.