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Richter, A.; Boudinot, B.; Yamamoto, S.; Katzke, J.; Beutel, R. G. 2022. The first reconstruction of the head anatomy of a Cretaceous insect, †Gerontoformica gracilis (Hymenoptera: Formicidae), and the early evolution of ants. Insect Systematics and Diversity 6(5), 4:1-80. 10.1093/isd/ixac013 PDF

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Richter, A.; Hita Garcia, F.; Keller, R. A.; Billen, J.; Katzke, J.; Boudinot, B. E.; Economo, E. P.; Beutel, R. G. 2021. The head anatomy of Protanilla lini (Hymenoptera: Formicidae: Leptanillinae), with a hypothesis of their mandibular movement. Myrmecological News 31:85-114. 10.25849/myrmecol.news_031:85 PDF

Notes: Head anatomy, Protanilla

Richter, A.; Keller, R. A.; Rosumek, F. B.; Economo, E. P.; Hita Garcia, F.; Beutel, R. G. 2019. The cephalic anatomy of workers of the ant species Wasmannia affinis (Formicidae, Hymenoptera, Insecta) and its evolutionary implications. Arthropod Structure & Development 49:26-49. 10.1016/j.asd.2019-02-002 PDF

Notes: Cranial anatomy of Formicidae, with Wasmannia as exemplar.

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Riemann, H. 1987b. Die Bienen, Wespen und Ameisen (Hymenoptera Aculeata) der Naturschutzgebiete "Dünengebiet bei Neumühlen" und "Vossberge" unter Berücksichtigung weiterer Binnendünenareale. Beihefte zur Schriftenreihe Naturschutz und Landschaftspflege in Niedersachsen 17:1-79.

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Notes: Ants (Dorylinae) pp. 182-184.