FIGURES 1–8 in Genera of Gymnodamaeidae (Acari: Oribatida: Plateremaeoidea) of Canada, with notes on some nomenclatorial problems

FIGURES 1–8. Gymnodamaeus cf. ornatus Hammer, Alberta, Canada; scale bars = 0.1 mm, except Fig. 3 = 1 μm. 1, Prodorsum showing interlamellar seta (in) on apophysis at median edge of bothridial ridge and opposed to median prodorsal tubercle (larger arrow); 2, Prodorsum and anterior notogaster; 3, Spherical crystalline notogastral pustules; 4, Ano-genital region, arrow points to soft cuticle between genital and anal openings; 5, Dorsal habitus view showing Ushaped raised notogastral ridge pattern; 6, Rostrum from anterior view; 7, Light micrograph of ano-genital region, arrow points to preanal organ; 8, Genu IV (DIC micrograph) showing normal joint, i.e. lacking retrotecta, between femur (top) and tibia.