Fig. 13 in Comparative analysis of worker head anatomy of Formica and Brachyponera (Hymenoptera: Formicidae)

Fig. 13. Histological sections of head of Formica rufa. A,B,C: Cross sections. D,E: Frontal sections. — Orientation: A,B,C: ↓ ventral; D: ↓ anterior region; E: ← anterior region. — Abbreviations: 0an4 – M. tentorioscapalis medialis; 0bu1 – M. clypeobuccalis; 0bu5 – M. tentoriobuccalis posterior; 0ci1b – M. clypeopalatalis, paired portion; 0hy2 – M. tentoriooralis; 0hy3 – M. tentoriohypopharyngalis; 0hy7 – M. praementosalivarialis; 0hy9 – M. oralis transversalis; 0la5 – M. tentoriopraementalis; 0la11 – M. praementoparaglossalis; 0la12 – M. praementoglossalis; 0la14 – M. praementopalpalis externus; 0md3 – M. craniomandibularis externus; 0mx3 – M. tentoriocardinalis; 0mx7 – M. stipitogalealis; 0mx8 – M. stipitopalpalis externus; 0la14 – M. praementopalpalis externus; al – atala; ata – anterior tentorial arm; bpb – basiparaglossal brush; bt – buccal tube; cd – cardo; dhy – distal hypopharynx; ep – epipharynx; hyb – hypopharyngeal button; hyr – hypopharyngeal rod; ibp – infrabuccal pouch; lc – lacinia; ll – lateral tentorial lamella; md – mandible; mda – mandibular apodeme; mdgd – mandibular gland duct; mdgr – mandibular gland reservoir; Mpel – M. pharyngoepipharyngalis, lateral portion; mxg – maxillary gland; mxgo – maxillary gland opening; oa – oral arm; plb – palpus labialis; pma – premental arm; pmx – palpus maxillaris; pph – prepharynx; pphg – prepharyngeal gland; pphgo – prepharyngeal gland opening; sc – scapus; sp – sitophore plate; spc – stipito-premental conjunctivum; st – stipes; sv – salivarium; svd – salivary duct; svo – salivary opening.