FIGURE 5. A–G Nanohystrix hammerae n in Nanohystricidae n. fam., an unusual, plesiomorphic enarthronote mite family endemic to New Zealand (Acari, Oribatida)

FIGURE 5. A–G Nanohystrix hammerae n. sp., transmitted light compound microscope images of uncleared adult females, coarsely sectioned near sagittal plane (all lateral views, anterior to right). A, overview of fully distended specimen, with marked sections showing location of indicated close-ups; B, anterior third of fully contracted specimen, with close-up indicated; C, dorsal sejugal region, showing occipital wall and nuchal constriction of prodorsum, and extrinsic retractor muscles of chelicera; D, dorsal sejugal region and anterior region of notogaster, showing prodorsal retractor muscles (pr.mu; broken in C) inserted near border of nuchal constriction; E, posterior slope of hysterosoma in region of third scissure—at two focal planes, showing postanal suspensor muscle (po.mu) and deeper plane (right) with cuticular disk cd5 (with underlying fibers, fib) and seta h1 (with depressor muscle, h1.mu); F, section of middle scissure (more lateral than indicated in A) showing base of seta f1 and associated depressor muscle (f1.mu); G, ventrosejugal region, showing narrow ventral part of sejugal articulation and broad soft cuticle of epimere I. Other abbreviations: bng (anterior border of notogaster), cr.mu (cheliceral retractor muscles); cw (caecum wall), ep1–3 (plates of epimeres 1–3), nc (nuchal constriction), t.gr (transverse groove), sej (sejugal articulation), t.sul (transverse sulcus). All composites of 5–20 layers. Scale bars: 100 Μm (A, B); 25 Μm (C–G).