Jennings, J. T., Krogmann, L., & Priya, P. (2013).

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

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