Structure of eyeplates in Pseudomma kryotroglodytum sp. nov. and Michthyops parvus. Holotype adult female (D) and paratype subadult female (A, B) of P. kryotroglodytum and non-type adult female of M. parvus (C). A eyeplate expanded on slide, dorsal, to the right somewhat distorted B detail of panel (A) showing cyst connected with bottom of median cleft C homologous cyst in another species and genus, arrow points to tubular connection with anterior margin of eyeplate D series of denticles along sub-lateral section of anterior margin of eyeplate.