Figure 5
From: Head morphology of Tricholepidion gertschi indicates monophyletic Zygentoma
SEM micrographs and 3D reconstructions of Tricholepidion gertschi ;. a) frontal overview of the head; scale bar 200 μm; b) detail of the externally visible part of the anterior mandibular articulation; scale bar 20 μm; c) detail of the anterior mandibular articulation complex. d) detail of the clypeal region and the labrum; e) extrinsic and intrinsic labral musculature; f) frontal view of the anterior mandibular articulation complex illustrating the caliper-like form built by the anterior tentorial arm and the clypeus. The white arrow shows the viewing angle for Figure 5g); g) dorsolateral view of the anterior mandibular articulation complex. Abbreviations: antb, antennal base; ata, anterior tentorial arm; atap, anterior tentorial apodeme; clr, clypeal ridge; cly, clypeus; dcly, dorsal clypeal area; dlbr, dorsal labral area; er, epistomal ridge; fr, frons; lbr, labrum; lbrr, intralabral ridges; md, mandible; mdd, mandibular depression; mdle, mandibular lateral edge; mdr, mandibular ridge; moc, middle occelus; pe, pedicellus; sc, scapus; vcly, ventral clypeal area; vlbr, ventral labral area. Please click on the figure to activate the 3D content. For muscle references see main text. Images not to scale to each other.