FIGURE 7. Ophiophragmus luetkeni ZUEC OPH 2164 in Shallow-water brittle stars (Echinodermata: Ophiuroidea) from Araçá Bay (Southeastern Brazil), with spatial distribution considerations

FIGURE 7. Ophiophragmus luetkeni ZUEC OPH 2164 (5.7 mm dd). (A) Dorsal view. (B) Ventral view. (C) Detail of fence of papillae. (D) Detail of the oral view. (E) Detail of madreporite. (F) Detail of dorsal arm. (G) Detail of ventral arm. (H) Dorsal arm plate. (I) Ventral arm plate. (J-K) Lateral arm plate. (L) Vertebra—proximal surface. (M) Vertebra—distal surface. (N) Vertebra—dorsal surface. (O) Vertebra—ventral surface. Abbreviations: ads: adoral shields; as: arm spine; bs: bursal slits; d: dorsal; dap: dorsal arm plate; ddi: dorso-distal; ddmf: dorso-distal muscular fossae; di: distal; dp: dorso-proximal; fp: fence of papillae; ip: infradental papillae; lop: lateral oral papillae; ma: madreporite; mp: madreporite pore; os: oral shields; p: proximal; pe: perforation; rs: radial shields; tn: tentacle notch; ts: tentacle scale; v: ventral; vap: ventral arm plate; vdi: ventro-distal; vp: ventro-proximal; zd: zygocondyle; zp: zygosphene. Stereomicroscope photos: (A)–(G), scale bar equal to 0.5 mm. SEM photos: (H)–(O), scale bar equal to 100 µm.