Fig.6: Volumerenderings of theheadof Protanilla lini (CTAR0046). A, C: Leftpart dorsal, rightpartventral view. B, D: Sagittal view. A, B: Antennal musculature. C - D: Mandibularmusculature andmandibular gland. Abbreviations: 0an1 – M. tentorioscapalis anterior; 0an2 – M. tentorioscapalis posterior; 0an3 – M. tentorioscapalis lateralis; 0an4 – M. tentorioscapalis medialis; 0an6 – M. scapopedicellaris lateralis; 0an7 – M. scapopedicellaris medialis; 0md1 – M. craniomandibularis internus; 0md3 – M. craniomandibularis externus; 0md8 – M. tentoriomandibularis; ab – apical mandibular blade; ata – anterior tentorial arm; bm – basal margin; cli – clypeusinflection ventral wall; dta – dorsaltentorial arm; dma – dorsalmandibular articulation; esr – epistomal ridge; hyc – hypostomal cavity; hysc – hypostomal carina; hysp – triangular hypostomal process; lbr – labrum; ma – mandalus; mcr – median clypeal ridge; mda – mandibular apodeme; md – mandible; mdaab — mandibular apodeme accessory branch; mdc – mandibular carinae; mdg – mandibular gland; mdlg – mandible lateral groove; mds – mandibular sensilla trichodea; mdvg – ventral mandibular groove; ml – mesallamella; pgr – postgenal ridge; pta – posterior tentorial arm; pp – posterior process of tentorium; tb – tentorial bridge; to – torulus (internal rim); vma – ventral mandibular articulatory process. Colors: beige – mandible; grey – cuticle; orange / red – muscles; purple – glands. Symbols: black arrowhead – dorsal mandibular groove interacting with distal clypeal knob; blue outline – parts of cuticle rendered transparent.

Published as part of Richter, Adrian, Garcia, Francisco Hita, Keller, Roberto A., Billen, Johan, Katzke, Julian, Boudinot, Brendon E., Economo, Evan P. & Beutel, Rolf G., 2021, The head anatomy of Protanilla lini (Hymenoptera: Formicidae: Leptanillinae), with a hypothesis of their mandibular movement, pp. 85-114 in Myrmecological News 31 on page 94, DOI: 10.25849/myrmecol.news_031:085, http://zenodo.org/record/4675257