Fig. 5

3D-models of reconstructed Synchrotron X-ray micro tomography data of muscles of the opisthosomal compressor system (in green) and associated exoskeletal elements. a Dorsal view on the opisthosomal compressor system with transparent notogaster. b Virtual cross section of idiosoma, frontal view. c) Virtual sagittal section of idiosoma, lateral view with transparent holoventral plates. Note the brighter region of the apodematal complex of the holoventral plates. aa, sclerotized wall of the anal atrium; glpra, gladius of the preanal apodeme; HV, holoventral plates; lrm, lateral rectal muscle; nf, notogastral fissure; NG, notogaster; nlc, notogaster lateral compressor; PL, plicature plates; poa, postanal apodeme; pra, preanal apodeme; tn, tectonotal notch; vpa, ventral plate adductor; vpc, ventral plate compressor. Asterisk indicates the transparently displayed rectum