Figure 4
From: Head morphology of Tricholepidion gertschi indicates monophyletic Zygentoma
SEM micrographs and 3D reconstruction of Tricholepidion gertschi ;. a) detail of the posterior mandibular articulation; b) lateral overview of the head; c) the musculature of the antenna, cephalic digestive tract, and tentorium in lateral view. Abbreviations: ata, anterior tentorial arm; atp, anterior tentorial plate; dta, dorsal tentorial arm; e, eye; fl, flagellum; fg, foregut; fr, frons; g, gena; md, mandible; mp, maxillary palpus; oc, occiput; ocr, occipital ridge; pca, posterior cephalic articulation; pe, pedicellus; pma, posterior mandibular articulation; pot, posterior tentorium; sc, scapus; st, stipes. Images not to scale to each other. Scale bar 200 μm. For muscle references see main text.