Jennings, J.T., Krogmann, L. and Priya, P. 2013.

Happy birthday Willi Hennig!—Hyptia hennigi sp. nov. (Hymenoptera: Evaniidae), a fossil ensign wasp from Eocene Baltic amber

. Zootaxa. 3731, 3 (Oct. 2013), 395–398. DOI:https://doi.org/10.11646/zootaxa.3731.3.10.