[1]
Makarkin, V.N. and Wedmann, S. 2009. First record of the genus Sympherobius (Neuroptera: Hemerobiidae) from Baltic amber. Zootaxa. 2078, 1 (Apr. 2009), 55–62. DOI:https://doi.org/10.11646/zootaxa.2078.1.3.