Ros-Farré, P., & Pujade-Villar, J. (2009). Revision of the genus Callaspidia Dahlbom, 1842 (Hym.: Figitidae: Aspicerinae). Zootaxa, 2105(1), 1–31. https://doi.org/10.11646/zootaxa.2105.1.1