Details of tagma II of Erugosquilla massavensis (Kossmann, 1880). A, D under macro-fluorescence settings; B, C under crossed polarized light. A. Close-up of the supposed posterior part of the hypostome-labrum complex (see also Figure2A). Arrow marking small sclerite as in Figure3A and C; not to scale. B. Detached post-mandibular feeding apparatus, including maxillulae, maxillae and paragnaths; posterior view; not to scale. C. Paragnath; anterior view. D. Mandibles, maxillulae, maxillae. Left in anterior view; right in posterior view. Abbreviations as before.